Chicago Daily Tribune Newspaper, July 20, 1878, Page 12

12 » - THE CHICAGO TRIBUNE: SATURDAY JULY 20, 1878~TWELVE PAGES. ; THE ECLIPSE. ™ THE COMING _SOLAR ECLIPSE. Between Us and ® IT WILL OCCUR MONDAY, JULY 29---ACCOUNT OF THE PHENOMENON., duteed In, and malgro the alleged ' sighty of scveral observers, it docs Rpnear probable tha aringle mass large enough to produce ty, claimed perturbations In the mercnelal m-m: would have heen scen era this by astronomory; and the balance of probability, as between ang Jarger mass and ssveral amaller o, In decldedly In favor of the Intter, ‘The amall~ appearauces peen by ¢ observere, and supposed by them o satcilites of ulcan, may prove after all the Sun. “pleces of him." 1t Is iy (mumulul‘c. :‘?.3' : uver, that the apsidal movoment referred to g - i s «uc altogether to the presence nenr the sup of The Path of Totality---Where ani many meleoric masses which are within the gp, hitof Mercury only when they are very ueey their perihelin. THRE CAUSE OF AN ECLIFSR of thesun Is so well understood by the m,. Jority of our readors, and text-book explans. tlona are so casily accessible to those who 4, not underatand It, that we shiall not attempt 4y cssay on the subject. Wo merely remark thy, the distances of both sun and moon from thy earth aro continually varying, the orbjty of carth and moon ~ belog ellipge, ‘The apparent sizes of bolh vary hm:rul; with their actual distances, At the ting of new moon the ‘shadow of the mayy is projected toward earth, but tha axi passes to the north o 1th of our globe unjesy the moon be the same thne near the pofny (node) where her orbit crosses the plaue of 1hy ecliptic, When ‘the named clrcumstaney oceurs there is & nolar cclloso, the character of which depends upon the relative distance of thy muon and sun, If the ystlo of the distauces by greater than the average, tho moon’s shadoy awecps across the earth, s in tho present caeq: and the dircction of the movement of thy ehadow In this fustance showa that the moon |y near her south node,—moving fromn north inte routh: latitude, Tho ratio of dlstances being equal tothe average, the apex of the shadow Just about reaches the surface, and the breajty of the path of thie shadow Is reduced to a math. ematical line, If, on the other hand, thy ratlo ot the two distances be less thag How the Eclipse Will Be Observed. The Oorona---How It Will Be Measured and An- alyzed. DR Por ram %4 Tt 81 . Searching for Intra-Merou- rial Planets, Ele, Etc,, Ete. Anp aclipss of the aun will oceur on Monday, July 24, next, which will be visitie feom every vurt of North Americs, weather permitting, It will be total along & narrow belt of country ex- tending from Bebring's Btraits to the Gulf of Mexlco, and partial outside that zone. We pre- sent three diagrams, which fllustrato some of the more Important facts 1a regard 1o this phe- nomenon. THE TOTAL ECLIFSE will begin just north of the Yablonol Moun- 1ains, in the Province of Irkoutsk, Siberfa, in west longitude 165} degreea from Washiogton, sud porth latitude B degrees. From that point the central lioe runs & Jittlo north of eastward to tho enstern shore . of the Continent, passes almost duc east through Behring’s Btraits, in latitude ©0 degrees 40 minules, then through Alaska, foyeste i ! T LA A, 4 tho sverage, the moon’s shadow docs nog extend no far s tho earth, and the sun appears o ba larger than the moon, 1n this case, to the observer wha s situated on the central track, hie sun ahines out all nround the moon for g short time, forming & ring of sunlight s around the moon. 'This fa called an ** annuler™ eclipse, ONSERVING PARTIES, Congress hos appropriated $8,000 £ cavar thy expense of observing tho eclipse ly the Gor. Jeaves Sitka Island a few miles to the south- wost, turns southesstward through the British vossessions, and crosses the northern boundary line of the United Statesn longitude 88 dearees west from Washington. It will pass morth of Balt Lake Clty, and alittls south of Denver, Into tho Qulf of Mexico between Galveston and New Orleans. Its courso will then be nearly east- ward across the Isiand of Cuba and Southern 8an Domingo, and ends a little beyond Porto Rico, In north Iatitudo 173¢ degrees, and longl- tude 73¢ degrees cast from Washington. TIB PATE OF THE NOON'S SIIADOW ACHOAS THR UNITED STATES s shown on our first nap. The eclipse will bo total to all points included between the two nearly concontric curves which run from the upper left to the middle of the lower marein of the diagram. They fnclose n iract of country about 110 miles wide. For the convenlence of thoto who may wish to map n portion of this route on a larger scale, we append the follow- Inz results of calculations mado at the United 8tntes Naval Observatory at Washington. Tho first column shows the time at Washiogton when the cdges of the shadow sweep over the points designated in the other columns, The local time of the phenomenon may'be obtaloed by subtracting from the Washington time the longitude of the place of observation, tho sainc belng reckoned fn time ot the rate of four min- utes to a degree. NORTH LIMIT, ' Latitude.{Longituds crnment astrouomers. The Naval Ubservatory at Washington has sent out five parties, Pro fesror 8imon Newcomb, Commander W, T, Sampson, Lleutenant C. (. Bowman, and Aw sistant John Metre, wiil be at Creston, Wyo, They will take photographs of thy corona, and search for intra-mercurial plancty, though Newcomb was unsuccessful in the rcarch in 1860, Anuther party, consisting of Prof. Witllam Harkness, Licut. £. W. Sturdy, assistant astronomer A, M. Bkinuer Slormcvl, of Chicago), Prof. O, II. Robinson, and Mers, L. E. Wallace and A, G. Clark, will also be at or near Creston, to take photographs and make spectroacopic and thermo-electric obier. vatlonsa. Mr, Janssen, the distingulshed French apectroscoplst, will probably be in the same nelghbornood. T'rof. Draper, of Naw York, Prof. Barker, the eminent chemist, sud Edison, were announced towo to Colorado, but have made their way to Rawlins, in Wyoming, where they will work with thu tashineter, camera, and spectroscooe., At Pueblo, In Colorado, Profs, Asaph Hall, nd A, W, Wright, with Messre, Wheeler, will take photorraphs of the corona and the surroundiog sky, make polariscope observations, and sesrch for intra-mercurial planets. Atthe ssme sta- tion, or newr it, Profs. J. K. Eastman, Lewis (ol Albany), Assistant Astronomer I, Al : Pritchott, will make drawings of the corona, look for_new planets, and use the polariscope. Prof, E. 8. llulden Lieut. T, W. Very, and r, C. 8, Hastings, wil be in the mountains southwest of Denver, #tudying the corons, and looking for Vulcan, Mr.G. W, Hill, of the * Nautical Almansc’ oftice, will be near Donver, makiog drawings of the corona. Gen. Myers and frof. Cleveland Abbe, of the Sigual-Scrvice, with Prof. Lun{’- Iu{; of Alleglinny, will obset ve from Plko's Peak, rofs, C. A. Youug, C. F. Brackett,and C. J. Rockwood, of Frinceton, N. J., with Messte. W, Libbey, Jr., G, IL Cailey, C.D. aTuner /f P Ay, 8 A hiad D ammeto Byem s Grand Mzl (0 atlesty P L :-..zrfis- T — S FountainTromes, Ll 7 6 AT o1y "o ¢ Fort. Qibaon Haz Il S P ) 4 . Tordy Vannoley | g } B T ok : : S j 5 TENRIT 0GR ppe oY an%— R k¢ —— ort A rald renlo ] K 5 ) 2 !l'!‘l?q'.l.lgl nm&h sartly M uity % NP Pt Ie. ) Db Wittn 4‘ Fort Tl Jier ; 24 Fing 1] .Jlmrldts,- G0 X (P COTE : Tharmad? Dfakron Cliy’ Montieellon ofeyrent PRl 1 Sl o . A°Catarso 2 Crevvonn | NeMiniels Lyl ] = P y’:q‘ 5 % coten -2’- R G lhuhho Zomp Gaw ° C Sl oy © PiTrgowosmmasityn, § G- ? rou, v A Uhy, & e ne Ayyie @ 5 s Palostfad T ‘hfi?‘m‘? loamboro o ) & A) (-8 "§ DL WS [ 2eaniee rhv‘fl: o tlinton| Mlayy, ) Phalps 5‘ hflt,, o Baton Ziodyh O 7ot gtead_Ora .j nfimv. IR P 17,” f SCameran | ] o NP Colunibuy ‘ort Blins, S Edicams W AN sasantar, c"l '5‘295-1. ton Morgs® * C 17 Loagitade!5° Weat from [3° Washington. 1° UTI LLOT. Latitude.|Longltude inin dege min. deg. valn. deg. min, R R 4 Bennett, W. McDonald, C, J. Youug, and I, :g :m“ ’\2 8. 8. 8mith will be vear Denver, chicfly work- 45 144l a6 1ng ‘with the spectroscope. Maris bitchell, 43 21| of Vasuar, will also be near Denver. Normn AL SuRa Lockyer, Dr. Bchuster, und Prof. Thorpe, of an isd pa0 Enilnnd. willbe 1n the same netghborhood, son B ith the telespectioscope, and the Tast-nam: 39 124 .2"' Reotleman proposcs ta mako a scries of meteor- fg :3” 53; ological osbarvations st ral poluts, lnclud. 3 bonl e ing tho Dearborn University 1n this city, 27 i i QOrmond Btone, of Cinclnati, with bis asslstant, 2 a3y 10 Mr. C. W. Upton, will be on vne of the mount ain peaks near Denvor, and Mr. L. Trouvelot and soo, of Cambridze, Masa., will make drawings of the corous from some volotln a1 TIIN TOTAL ECLIPSH will bo but momentary along the lines drawn through these poluts. Nearly midivay between them the eclipse will be ceutral at the times stated. Tho duration of tho total phase on the central lino decre: from 3 minutes 9 soconde ut 4h 50m p. m., to 2minutes 51§ scconds at Gh 2m p. 1., and to 3 minutes 0 scconds at 5h 5Tm P. ., Washington time. The following table shows the number of miuutes at which the cclipse begins before the middle of totality, the angle from tha vertex of the sun’s Jimb at which tho first contact witl occur, and the total dura- tion of the ccllpse, at acvernl dates alonz the 1lue, which will answer ncarly for a polot near the zone of totality. Washington| First Angle Whole time of contact from Duration central occurs, veriex or previowsly.| al do, Ecllvse, ulm, deg, A o T3Y .53 2 20 5 10 72 03 2 10K [~ ’Hg 102 2 10% 6 30 [0 1 82y 6 40 Gux 120 2 07 [ [ 128 2 004 & 85 61 130 1 b8y 8 00 b7 . 137 1 b0 THE ECLIPSE WILL DB VIsiGLE Wyoming, astly, the Chicago Astronomical Boclety will barepresented at or near Denver by three of ita_mewmbers, Prof. G, \v. fough, 8, W. Burn. ham, and Prof. E. Colbert, 'They will be s companled by the Rev. Dr, Bwarey, and Mr.A.C, Thumas, uf this city, and Prof, Ensterday, of Tilinols; sud will probahly bo juined in Colorado by Prof. Kellogg, of Evauston, aud one or two other gentlemen, It Is uot yet decided whether or not they will all observe the eclipse from the same topographical point. They will probably obsurve cuntacts, look for Intra-mercurial plavets, mako drawings of tha corons, gnd ob- scrve with the s, uutrn-w&e. Prof. Lewls Bwlitt, of Rochester, N, Y., will accompany tho Chicago party. "Tho folluwlog list of the fotal eclipses of the sun that will nceur durlng the remainder of the current century, with the place where total, sod duration of totality, s furnished by & conteme porary: 1882—May 17, Arabls, 2 min, 8x3—Day U, Marquos lands, 5 min, 15 se0. 1885—Sopt, O, New Zealond, 2 min, 1880—Aug. 20, Western Afelcs, 8 min, 81 sec, 1¥87—Auy, tusela, 3 min, 40 sec, 1880—De! Angola, Western Africs, 8 mia. B4 sec. 1893—April 10, Brazll, 4 min, 44 sac, ARRIVAL OF ONSERVERS AT ONAHA. Asecial Dispatch to The Tridune. OxAlta, Neb,, July 10.—Prof. Newcomb and to all polnts in North America that arc outalde A8 Seen from Chicayo. the zona above referred to: but only a3 a ** par- tial” eclipse. That is: A portion of the sun will be obscured by the mooa. The lnes which cross the path of tho moon's shadow, in the flrst dlagram, show the Washington time when tho eclipse will begin. Tho lines pass through the poluts on the earth's surface at which the moon will seemm to first touch the sun; for onch ten minutes. The time at which.the oclipse will begin at any place in the United States may be found, to within a fraction of 2 minute, by tefcronce to thesc lines. Places not named In our dlagramn may be locsted from 2nother map, and their distances from the time lines meus- ured off by any convenient scale, ‘The magnitude of the ecllpse will evidently decrease with an increase of tfm distance of the observer from the path of the shadow, About three-fourths of the sun’s disc will be obscured st polnts situated 900 miles to the north (by east) of thu centre of the shadow. The wun will, therefore, be sbout threc-quarters aclipsed to all the Northwestern States, TUE SECOND DIAGRAM representa the celipse as it will be scen from Chicuko, if the weather permit it to be seca ut all. The central portion of the figure shows how the sun will appear to be partlally covered by the muon ue forty-four ninutes past 4 o'l Uhlvago tine, which is the date of preatest obscuration. The distanca between the centres of the two lumlnurles will then be 4i5.0 sccconds of ore; the spparent diameter of the sun belng 1,801 sec- onds, and of the moon 1,065.6 scconds, Hence ubout 73 per cent of the sun's dise will be hid- den, the visible portion prescuting o crescent. like phase, g 10 the Neure. “Tho vighit-hand side of the (second) disgram represcnte the relative position of tus moon at the begimning ot the eclipse at Chicago, at 30, A, 22, poe The tioon will touch the sun ut 125 degrees from the top point of his dise, measuring towards the ngit, or 35 degrees be- Jow what uon-astronoters would eall the o western ' point ou his clreniwtercuce, “The lust contact will ocenr at 5u. 41m. p. ., in the vosmtion shown ut the lett-Land side of the tecoud diazram, TUB TUIRD DIAGRAM fudicutes the puaitions of all the stars to the neventh inugnitude, fuclusive, which are near Map of the Stars near the Sun. Frof: latkues of 'V “"'"m':f“l:' Frouvsloh and Alvin Clark, of Csmbrk Mass,, sud Liout. Sturdy, passed through Qmaha to-dsy es route tu Creaton, Wya., to scientitlcally obsorvs the sun’s eclipse on th EXTRADITION QUESTIONS. Rpectal Correapandence of The Tribuns, Dxs Moings, In., July 18.—A requisition was received by the Governor of Jowa from the Gor- ernor of Massachusetts for a warrant of arrest aud thedulivery of Messre, Jones and Atkinson, merchauts at Daveuport. Tho grounds sot forth for the warrant are that Jones snd Atkinsus had been indicted by the courts of Bullvlk County, Massachusetts, for obtaining goods under false pretenscs. The warrant was grant- cd, An application was at once mads to the Goveruor to revoke tho warrant, on the ground that the partics had once been tried i tho courte of Towa for the same offouse allcged lu the requisition from Massachusetts, und ac- quitted; heave were not liable to further arrest and trial. Gov. Uear refused to revoke the warrant,—bolding that, under tho laws of the Uniteit Btates, his dutics wers executory, sud not judiclal. He bad uo sathority to inquire {uto the law of the case. That belonged to the courts, He, however, stipulated In the warraut that the defendants should not be removed fron o State for three days, that they might avall thewmsslves of tho beustis of the law of habous- 1 h‘:‘llfl'lllul‘l of the Governor Is imporeant i two points. [t shows that ineatiate creditors from vt her Btates will not be parmlited to take away cltizens of this State without they have opportunity for defense fn our own courts; sud R will forcs to su adjudication the questin whether a trial for, and’ scquittal of, au offense ¢ any bar to s trial In another Btate for the samu offense, The probable pivota! point in tha case will bo that the courts of Iowa hayeno gu diction (n offenses committed in anotber | et — e FANCY, 0 lat the golden harp be strung, And Heauly 8 bceldx the wtrings, be 225,685 iniles; her distavee from the earth’s | two fest numed poitts, and the second (Denver) | shinea ouly by retfected sunbeit; and that | favor of a solar atmosphere which contains vast . Now, more than wontre belne 30 miles, or nesrly 10,500 | will be the one selected by tho ureater number, | theso two states merge into ono anothier by to | quantities of oxygun as well as hydrogens but - servers whl devote thalr wole spergies tmiles lesa than bher meau distance of 204,813 | becwuse it 18 nearest to the **States,” and to | us imporeentible gradations, But ou this sup- | mors proof Is*highly dealrablu. ~ Will Draper * to the task of obtainiog photographic evidence 1lles, her cquatorful borizontal parallux beln | Europe, trom which quartor of the grlobe some | posltion the vorous sliould be n sphierica), ur | be able Lo recognize the existence of the nxivzon of the existence of the various elentunts then B9 minutes 40 secomds of are. ‘The sun's | parties will come to view the eclipse. splicroldal, shiell; whereas Its ubsorved shape | itnes In the corona from position uear Raw- | In the corovs, SBume will seck to varily or cor- distance will be (L,730.000 miles if his 1 Bome ohservers will chlefly devote tholr ener- | {s provoklugly trregutar, and, more perpluxing | Hns, in Wyoming Territory, onthe S0t inst. Y and ' roct the work done slready, in dissecting out distance be 2,850,000, which now appears to be { gles to determine tue thnes whon the cootacts | stili, Its sbape and extont are scarcely the | will these Hunos bo found oxtending from the the elemouts which most clossly bug the chro- 1ta wost probable valuu, §6 §s thus seen that [ occur, with the view of obtainluig a wore ucci- | same to auv twoobservers, On thuphotographic | buse to a distance of live or six times the solar . mosphere, and othors will survey thu less rich the moon's distanco Is lews, and the sun's | rate knowledie of the moun’s motion. Others | plate it #burns " its mage comparatively | dunieter,—the apparcut lmit of the coronad reglons of the exterlor part, for the purpuse of greater, than the average;~conditions which aro | will study the shape and extent of the corona | thin, and somewhat frregular rlugs to the obe | This s really a very important point; it may discovering thealtitudos at whichtho several elo- Well knawn tu be necessary to a total ecll and protuberances. Others will endeavor 1o § server with the naked vye, or throuah u tele- | prove to be nuch thic most importaut polnt fis | wents cease to manifost thelr presence, We 5‘1" rllmalxlcr;tl‘ia M;iljumsllu"(h ‘Taking the s dmec{: (lxl:u. the c{uncv.ur of lv.lnir coronn llnvlth!n scopu xlx|( l‘uw ul finllvmz )idl’\!l‘. ::, 1|s nl:,t‘rhlwilr Imlnr nh_\llc,l :Ih“ hn‘ heen uu_limid since n‘xe in--vk;:crn ‘-hu:auma m‘:lunln-luu -nuuuucefl |'5§ umeter as 200, an e lnuon’s a8 2, use of 0 apectroscone, polariscope, an asi- | mass, that extends outward something ¢ ha nvention ol lu apectroscope. ie answer to Lackyer, A e continuous spoctrum @ tilles,it1s casy tovulculate that the lengthof the | meter; and atll others will spond tho precions | or two-thirds the svpareut dismeter of the ! this question may ruvolu u radical change m | regioh of tho coronn extemis to o distance of st moon's shadow will then bo 283,150 miles, moments of totality tn the search for fntra | moon, and shoots out rays of surora-ilke brill- | the present acvepted theorles about the proti- | Jeast three degrees from the Sun's linb, Here fts breadth {perpendicular to the axis)e at the | wmercorlal plavsts. faney to o inuch greater distunce from the | mate csuso of solar Mght and heat, Iv haw | is room enough for renearch, by u whole army of ueridian of Denver {8 57 miles, TUX INATANTS OF CONTACT, b;mudl(ry ?t the I:llr‘k &-uul; which ‘uxlrkn :}.u hitl herto boen hel;: that !lleuplleuumfllt.ua of | enservers: tmln l'hlnk hl|ur . mumu;ltmnlstbv; HOW TO VIRW THE ECLIPAR, i place of tho moon fn the heavens during the | combustion s unknown on the auu, bis ther- | yastly eninnced view this gives us of the Sun ‘Tho great majority of our resders will Lo z;‘ll}'l';,:flnlf"‘(?;na'}"};‘ng):sslfl”rfflrifims:gg vurlod of tutulity. Astronomors scem jenerally | mal evorgy boing kept up by tue operation of | The “text-books glve his dlameter ss sbout ontside the zouo of totality; they will ouly seu | scured, (a)!\'hfill the sunlight reappears, aud (4) | t0 have concluaed that the last named part of § other cau. It is probable that combuation | 850,000 miles; but sccording to this the Bun and the partial ecllpsé. They Wil ot be ablo 1o | when the fast noteh of moon darkening fades | S8 phenomenon s chiefly tolluric,—a result of | does not act alone fn this resect, and may be a | his stuosphere fori a globe of sume vicw the magniticent corons.— undoubtedly the | out from the solar dise, will not b nated by | #ceini the sun's atoivaphere tarough our own, | coaparatively unlportant ageut of change,— ELEVEN MILLIONS OF MILEA uriginal of the halo of glory which the paluters | sll observors, Some of them Wil reigurd tho | Ao cotiartson of drawligs imade at the differ- § aud wo have good reason 1o belleve thatthe | yy qianotor, the outermost part of which fs buve depleted as surrounding the heads of the | observation of contacts as terribly prosaic, and | €8t Mlaces may cuuble us to divest tita branch | tenperaturo i the nelghborhood of the ¢hro- | jungy ynough to be approciabiv ut » distauce of saltits,—becauss the glorics of that vision are | relatively uninterosting, But it is reully a mat- | Of the sublect of some of tho mvstery that now | mosplivre v too great to permit tha chemt- than 90,000,000 vf miles under favorable nut possible so long shtyen a thread of genw | ter of graat \inportance. Astronviners are pot | 8tteuds (Lt aud tho cmpluyment of the polari- | cal union of oxygenwith hydrogen there, But tons. Yel evon this ts probably far within o s surface 14 unobscured by the moon, | now able to prealct the instant when theuioon's | 6000 mav euable usto kiow,more certaluly | far outslda that sletl of Hght, such & union 18 | g wctual lmit, as the 50 wmlles usually cou- But thoae to whom this epectacio is_denjud | centro will ba precisely on a named point fo the | $hut even tho photograph cun teth wbout buw | possible, If the clements bo presents and the | jjored ag the Lizht of our atmusphere is may view the cctipse with pleasure and profit. | celestial sphicre, so closely us s destwble for | 10T :’“’“‘ tho sun's normal surface tho corona ie | fact, it "f",‘“""""“' (""'"Il(" ?“'ml" us ’I" exnlaln | yeapeely one-tenth partol that indicated by some A plece of smoked or colored glass will ta | mero commercial purposcs; to say nothing of | self-lumisous. some peculiaritics of auitatlon above thie surluce | gyrgra] phcuomena. It is pot diflivult 1o calvu- found a valuable adjunct. Thoso who wera | thu dellumm( [ CHBMISTRY OF TON CORONA, not hitherto. accuunted for. A koowledgo of f /| Jute that & particlo of matter betunging to the victis of the bluo-glass mauls may find | o o mathemat 1o room to doubt. tat the corona ls | E1O supsrior llnit ab which oxvaen oxlats ma¥ | yup iy the plane of his equator, must be some usolul enmployment for that materlal atlast. | extentof our preseut uncertuinty, and ot the | gaseous; but of what kind, or whutkindy, of gay [ EVER Gnable us o sottle approxtmnately the | 15,000,000 wiles from his centrd, dn order that who' liave ~not this adventaze | same Uine give soime idewof tis woudertul | fs it composed! This question hos been alrewdy | Fexed uestion of solar tumperaturs. Mt t0 | 1l furca of wttraction shall be counterbalanced may take s strip of ordinary window-glass, sud urlc¥ 1o which calculation cun now becarried, iu part, by thespoctrds :m, w’!ul“ n«.;n_um ! |° '1:- 'f: Al f‘“’ b{‘lhe centritugal muvement due tu rutation oo sinoke §t befurehand, deepening he sbade . at ng thut the polut where w strulght line trument tellsof wonderful du“'fl"i‘ i cclipuntor' the toforstion | e uxis. gradually from one und to the otber, so thatthie | through the centres of tho sun und | yet diversity, when we compare th ugired on this point. A THK TASINETER, observer can chiovss at the woment that par- | 1moon would strike thuearth’s surluce at a kiven | ope wilh the atmosphers uf the eurth. Tie THE PROTUBERANCES Oue of the latest products of the wondertul tlcutar degree of wmoke density whicn permits | dnstaut can be computed Lo within sbout six | lutter Is composed essentlally of oxyxen and | o eruptions of ruddy or pluk-colored matter | brain of 1he wonderful Edison will also be cu- thy bast view of the ubject. Parties who have | wutles, ‘Iuis Is protty close recuoning; but cven | nitrowen, out near its base it contalus consig. | from tho rolar surface have been Intently | ployed duriug the cclipse. Tha instrunieut was the sdvantage of accurate time comparsons | this small wmount” ol uuccrtainty may bs | crable quantities of the vapor of water, aud | Watehed, and laborfously figured and measured | recently desceibed fully in Tus Tuisuxs, The tnay render scrvice (o the causa of sclence vy | elinluated by comvariug the times when the | carbontc weid gua, whils very nearto the futerior | during formoer velinses. “They will probably | lighe from dilfervnt vortious of the corona will notiug s closely as possible the tine whon the | moou shuts cut the Mgut of the sun at eclipses, | boundary we find uther materlal,—the duafof | recelve title - direce attention during the | be atlowed to fall 1l succession on moun's dark L 1 fret visible, eating its way | and of the stars when occullations occur, The | various sollils which properly belouy to the | moments of totality this thne, their | a “carbon-button,’ sud fta heat {oteosity 1nto thy sun, aud when the two luully rate. | cumiug eclipses will furntsh valuable data for | eartu’s erust. The solar atmosphere consfsts | charicter ls pretty well understood, and thelr | witl b weasured by the defieetion ‘They whould then comipare their timepieces with | such comparisons—much juore valuable thao | Jargely of hiydrogen, aud probably s still Jess | number aud appareat surtaces will e recorded | of the le in & calvanometer. The fustru- sowe oneeuf the estublisbmeots which recetve | those obtatned from occultations, ‘Uhe instunt | dense substance (element) the existence of which | ov the nunicrous pliotogravlis which can be | ment 1s s new that oue can scarcely say what tine siguals frum the Dearboru Ubservatory, | whca the light of & star ls cut off by the moon | isrevealud by the mvsterious line ** 1474, seen by | scanned ut lelsure after the eclinsatsover. The | it may be expected to reveal: but fmportant ro- und wake the ueededcorrection. 11 the reports | depends to some sxtent upon the contour of | Younw and Harkuess duriog tho eclipse of Aug, | protuberance: e uow known 1o be vust | sults are hoped for. Prof. Young luteods to eu- of such ubservatlous be mailed to the Buperin. | ber surfave st the point of apparent cootact, | 7, 1569, Low down, the sucetroscope shows the | Yulumes of gas, culedy ‘hyurum:u. which deavor to measure Lo jntenaity of the ditferent tendent of the Dearborn Obevevatory, Chlvaio, § und astronomers sre scarcely yer ableto state | presence of sti}l other elements, the bight to | belehiod out from she s foterior. They can | Jues of the corunal spectruu, he will collate thew. The locality where the | the distance between ber ceutre and any awwed | which each rises from the normasl surface of thy hunu_nuud. In the absence of an eclipse, by the INTHA-MBRCURIAL FLANETS, one party of ob- the20th, ubservativn §s made shouid be noted, as well 83’ | polut on the moon's Hino; whils the extinction | sun varyiug invervely with tho earth deusltles of | Woll kuown ethod, inveuted slmultaneously ‘The search for s Ylum. or plauets, revolving Till Fancy fud ber warbilng tougus, the sun at the time of the eclij The wedtal | e thus to thy nesrest acvond. of sunlight s due 20 the “contuct™ of two | the vapors thus farrecogofzed. 1he vapors of | bY 'kayer and ;nn en—atmply covering the | around the sun within the orbly of Mercury, Hor l"llllll' wings; horizontsl hue ls the ecliptic, snd the square SCIENTIVIC OBSERVATIONS curves of nearly equal radlus (those of sun and | sodium and fron sad wany other mctals bave | sub's lnage by futerposing a small disc of | will undoubtedly be undertakun by several ob- eDacee we cach tive degrecs lu longitude aud | will be mady at different points in the zone of | Wwwow), the extent of departure from tho circulsr | already been detocted, and thiere s reason to | metsl between bilm sod the eye. b Uy the duration of th i \ e o ke LTIk O b b et | nexosty aguiitatamin oo Lalluses huilherta tutality, cluefly 1o Wyoming, Colorado, furm belug murged by the duration of the | think that severat of the metalloids reuch up | chiel i X ous of solar euergy; | recordes ho transit of Mercury isst Muy e e Yortion bt o 48 | oiouieua kuown 8 Builv's beads. The satse | and sut farche than this metals proper, Owe | Sucie tremendous velocity of wiotlon fodicating | furulshies & new stimulus to the elforty houpl termued by reference to relative seceswtofifty | €clipse gives us the most preciss measure of | of the most futeresting of the questious yet to | the extitence of cruptive forces in the suu, the tho authorities are uot sl szreed o regard o lc. Ly ratl, 1t i3 destruble that tho obscrvers bo | Positlon, und It is to comparlsous of sular | by sctitled is whether or uot the curous resem- | inteusity of which bas nu parallel oo the earth. | ‘Yae position of Mercury durlug the transt was well weuttered, us well for the avoidance of total | cclipses thut we must chiefly luuk for correction | bles vur atnospbore la oue twportaut pasticu- PHOTOGRAPUY. mare neurly iu accord with the positions ss cale tutlure 1o cuse of bad weather at uny particular | Of the preseut tables by hitch astronomers cal- | jar: Wecan scarccly ssy what will be accom- | culated by tho uld of Leverrler's theory than by pulut selected, as for the obtalulng of s kuowl- | culste the positivua of ‘the woon us she would DOKS IT CONTAIN OXYGEN] plished, or ¢ven how much will be sought to be | tae use of thoss which do not allow for a wove- Aund tae dull clonds of auxious days Moust guly with her joyful song, Invoked #0 long through long detaye— Detayed so longl latitude. Toe thick line shows the direction ot = perpendicular 10 the horizon wt Denver, Col., at the thos of total eclinse. Of course, nuke of these stars will be visible out- #ide the zone of totality. We shall refer to them ore at lengih presently, Furtber cast thau the hmits of the wap will'shive Mars, aud Her dreams, now hastening to falgl), Loog bligbted, turn to fruitful Louss, Ax bees sweet honey caa aletil) From bitter Sowers. Leyond bira Mercury, the tzed star Kegulus be- | cize of the venation u time sud phenomeual | be scen frowm the carth's ceatre every bour | The fmportaut discovery by Prof. Draper, of | duug, by the uss of $he camera during the | ment of the apsidal line of his orbit due tu the iug nearly widway between the two planets. | display due to ditference in the position of the | throughbout the year. New York, that the liues of orygen are prosent | comiug eclipse. The shape, sud distauce to { stirdctive force ol an futerlor mass, such as it © let the golden barp be strang, Venus witl be weat of ths sup, u Hitlo § wbserver. But tho poluts chosen will chictly be TUE CORONA. {u the solar spectrum, has beon made sincs the | which the voronal display witl extend, may uot | bus been provused to call Vulean. Of coursu it iy it beside the strings, ubuut where tbe wentrul hoe crusaes tho Puciie “The study of thu solsr eclipses which have | Jast eclipse of the sun that could be studied for | bo recorded ou the pis Rullroad wud the Denver & Rio Graude Rall- | occurzed dgring (he vast tun years has thrown | ihls purtose. uing (rom auslozy, we may | of the lght and sctintyn duninoishes repldly | very scldom seen, becauso he fa so near to the soud. Otber poluts fu the West can only be | a great deal ulfl sbt on the corousi though that | fufer that vxvien is abuudant In the corons; | with distancs from the sun’s normal surface; | suu. relatively, tiat wo cun only vuce fu_awbile reuched by wsgon; and in the vastern part | s itsclt s blaze Lfl-unuzu Thore s now o | snd it fs existenco be, as clubyed, revealed by | andan “*oxuosure * of the olate for auy given | catch bim oug of the full blaze of the sunlizht; of the course (uear tbe Gulf) the sun will | douby thut it 18 s solar stinosphere, whick sur- | the presunce of bright ilucs o the épectrum, we | time will got produce equal results for differcut | abd a3 Vuleun (1) (4 still nearer, i uny Vuleou be 50 Jow ut the time of totality us to be un- | rounds the orb of day tu much the samc way- | way infer that (4 {s not present in a tiore con- | distances cutward. But wo may bope fur much | there be, une can scarcely bove to ducover tum pirady oo arcount of atwospheric couditl ner thist our stmosvbere cuvelopes tho carth, | deosed furm beuesth, as the dark llue 1s under- | nore thun this, At the thue of the celipsu o [ €Ieept whien the luterposition of the woon pur- that only costucts could Le Laken, su; It aceine probuble that the Jouer portion (that | stood to be the result of superposition of & gas | 1569 & certatn writer was laugbed at by sowe | Mits us tusce the viars and plavets that are photugravhy being very luprobabl nearest the sun’s centre) o sutliclently hot to | upou a solid or lquid of the sawe materlal. | astronowers because be veotured to refer to w | uearly fu huw fruwm the earth towurds the suu. suivers will thescfore eluster citetly arouud the be sell-luwinuus, ¥ Ue the wure exterdur pare — ‘Jbe balauce of probabllity now scemis to bé lu - puotograph of the coremal sbectruw, | Awid all the speculatious thut Luve buea fue + becausu the intensivy | known to the reader that Morcury bimaelf is D uty ol ‘Till Fasey lgd hor warbling tongue, or soaring wiugs! The brig C 0 ¢ i The bright wiars Castor aud Pollux willbea Giaxcox, Cook Co., 1Nl Ggu. B. Warts. e ———— few degiees porth frum the widdle of au uo- suinary Jive joiniuz the suu wnd Venus; sod Yrovyou, below the sawv Hue, will forma dluwond teure with Veuus, Custor, aud the eclipyed sun. DISTANCE AND VOSITION. At the thoe of tutal cellpse oo the meridian of Deuver the wov's distance Lo that city will Logioal Inferonca. New Haven Regisier. "W never 83 l:ulfl."‘vilvl an exchangey “ who thouibt it s su to steal mn wmbreils Then you Dover saW & wau whose umbiells Lsd Juss beon stolou.