JUPITER 



10 Tribune Extras Pamphlet Series. 



f'vit he comes to now regions of mnteorie mat ti-r, or. 

 a- u wore, tu l're-li lields ami paMinv.-, new, where 

 the supply may lie rcne\ved. \Vhet her this be so or 

 not we do not know. ]'>iu tlxio is this process of 

 exhaustion "which must mie day come to an end ; 

 an.l y.-t tin-re is mi eoiitrivanre ly whicli tliat waste, 

 that squandering of v.lndil have spoken, may lie 

 prevented. Ooulil it In-, every year of that supply 

 w .ulil l.c eh.iiiL'ed in;o :.".T.iM;i,OUO of years. The 

 v a>te is runt imially Lii'ini: cm. Verily we have here 

 a problem which may will tax. all our thoughts. 

 J.'-t H- mit eli-ini - it at once, as we are apt to do, 

 with the tlicm^lit that our new knowledge has 

 shown us imperfection in the scheme of creation. 

 Let us ratlier say witli the 1'oet Laureate : 



] 1-1 Uiiowle !,'< u'nnv from more to more, 



But Mime nf reverence in us dwell ; 



TLi;it miiiil and soal. according well, 

 May make one music as before, 



but vaMer. [Applause.] 



varies in shape as the planet Is pursuing different part* 

 of its course round the heavens. 



SATURM 



MARS 



VENUS 



THE FAMILY OE PLANETS. 



B 1 ( ' >M > LECTURE OF R. A. PROCTOR 



DISTINcil -I-IIINc; CUARACTERISTICS OF THE INXEIl 

 I \MII.V OF PLAXETS MERCURY AND VEXUS 



'i in: I:\IM ii, I:I:C;U:DED AS A PLANET UNDS 



AMI -I IS, POLAR SNOWS, OCEANS, AND AIR-CTJR- 



J:IMS ( ,i M\I:S WONDERFUL CHANGES 03- 



BERVED IV .11 ri I r:i:'S EQUATORIAL BELT SIMI- 

 1 \l: 1 KAIl l:l S OF SATURN, URANUS, AJS'D M;i'- 



\\-\r. 



The M'eiind lecture of the course on astronomy by 

 Mr. 1,'ic lianl A. Proctor, Honorary Secretary of tho 

 i al A>ir "iiMmii al Society, was given at As- 

 sociation Hall. January 15. Tho subject "The 

 Family of J'lauets" was illustrated, like tho 

 lii-t leetiiro on "The Sun," by means of a 

 sc-ric'scii ]iic-turc-s and diagrams, made specially to 

 illu.-tratc- Pn. |. Proctor's lectures in America. A 

 lari:e aiidienc'i- greeted the lecturer, who spuke a3 

 {ollu\\B: 



LOOPED PATHS OF THE PLANETS. 



Till: LECTURE. 



The plain-is an- so < illc-d from a Greek word sisjnlfvlnsr 



\vand. i." in-cviu-i- thc'v ch;inzo their position on Iho 



ln-.ivi n~. I 'nlike ill sail and moon, the planets do not 



tr.ivi-1 :il\va\ s in .,!,< ilin-ctiou roaud the heavens, but on 



1" ]"'l| (llllll-, plll'-llill,' 



Tlii'ir \v iiid'riii^ e.,m *<-, now high, now low, then hid, 

 l'n._-r. -.-iv.', i-c-t re i^i-adi-, or standing still. 



In t be I r-i pii I urc- lierr ->]IM\VII ycin liavo vlows of loci;)8 

 pnrsiic-il liy ihc- dill' n nt plaiic-ts n. uiied m the diagram. 

 In the MI- xi \ I -u \ mi arc- Mlniwii Imw th.- loop !r iverseci 

 (Jupucr In the ilh -.tratod cube), 



VAItlETIES OF LOOPS TRAVmSED BY THE PLANET 



,1111 1 GO. 



It sr, in< to inn d"sira .li'. m takinz the subject of plan. 

 eta, to oonBidor them from tbe jicilnt of view of life in 

 c.i le-r wurids. Although it is not of any very jnvat scl- 

 value, the subject is ono in which we all take 



