4 66 



POPULAR SCIENCE MONTHLY. 



which have been found in the Upper Jurassic of France. When we 

 say that sequoias flourished in the Upper Jurassic we have a dim idea 

 that they are a pretty old type and that, although compared to the 

 most ancient known rocks the Jurassic rocks are mere infants, still the 

 Jurassic age came to a close several million years ago. But we can 

 form no more of a concept of the duration of several million years than 



eo\ O6ct*-0<\ I Gr6°*°J^ c . CA\rrk°^ l c. & V lorvstic L-hanqes 



Mm? 



Wholesale CJitmjtUotxs fc re^iCTriVution 



^I'Puil^i*: 



s» 't 



«s 



<0 



IP 



■J. to 



m 



.,:;.t ; *. , " 

 SjH 1 .' --t at ■' 



cite 



y*v -;••?•■ 



Oretace6u.S 



■_Cv-v -V 



- -J. T>. • 



M 



VOC6.XV&. 





3,000,000 yui , 



11 H . 1 . i ' lijif ' 



LtetacBCiiS 



Jf.,000.,000 >••»* ' 



■ ■.-' ■ /•''•i';^fefe 



r + ■' ■ "\ 



\ B )u'T : os>S VC-. .;• 



1,500,000 jr«»f« 



I r»ass\c • 

 1,500.00a ]**?* 



TernVr^' Tloro. o^ modern aspect 



$U earlier rm.nl period of laVe o-4 ov.r J^os.lj, , 



A later or^r ^..6 «i «'■•'.»•» 1J « ~>» or>CW«. ear-rU 



oef>o 





Continuation o^ Focene. txjpes 



M ooem Xm,^>«s ^rebommate. 



Numerous «ro.s.se«, ,^>cCims,oo."ks , fi«,£,ma.Vlea.ac. 



)ec^u 



. Vustbt 



El*tir\cUor. of Seq^uic. i 

 except »ri CaU|orr\LU 



R^coroeo (">m centrot fr,sio. 



Z.enYvVi of &Mflo>r<kenl 

 Arclvco. .HortV. Kmtnta, 

 CuroV*. Afcio., South 

 America. 



U'iU& »i VWmi,, Interior continental Sea wiVr. warm current*. 



jOrunbanT. rr.ob.rr. forest t^>eS 



Oo-Vs . wittou.il ,^iQ > 2.,m<La ) no"lio.s , so,sso.\ro.a ,la.ure\ . 



First ^aAms. 



"XroVltut ^ crtv * ori b totalis .numerous Corners 

 LmV ^V« °S ^nojio sperms 



Y3ee>er seas .wlensive ^resVwaler Voooons ar.4 (Uts 

 Tro>\ca\ (W ?«- imyo^erms 



Numerous. curabs W-^erns o.nb Q\nVo,oa\es . 



Su*^»V ofc *^ occurrence 

 m 



Monu, s>»c\»a. 



S^reo.0 to C,reerAar>o 

 KortV i\.mer>co. o.a8 



First Sbqwok 



SVuWou se<xs <mo Uym >ruck 1S V uivb ^resU-wo-te 



OC>?OSl\s. 



5>e A >r.turv 3 »^ western ^.menco-r. contmerX 

 Coru^rs .Cvjcaos .Terr.?, 



t'f.'V' 





^e o^ V.sVes, ,?W»ooW!« . *> ?ter l bo.V.rrr.a>V.^es 

 ^ A ' £ Seei ?WrAl 



r a V.or. o( Coriavto.\e»,E-^u^e,to.\es ,Lyco>oAia\eS 



Vottnas ,>ossiVte, 

 ancestori f^ 



First VoUz.as 



Fig. 1. Diagram showing Geological, Climatic and Floristic Changes immediately 

 preceding and during the ev0luli0n of the sequoia. 



we do of astronomical distances, and it is only by glancing at the 

 progress of life on the globe during all those years that we can get any 

 sort of an idea of the remoteness of the period. 



Fig. 4 is designed to show this progress of life in a general way, 

 in the animal kingdom, which has been chosen rather than the vege- 

 table kingdom because the changes in the former are more striking 



