Geology and Natural 1 1 >.<[(,,■ a. 



whole northern hemisphere, modified, however, 



already rem; ii cuinstances . 



distant latitudes. For tin- Spitzbergen Miocene fl 



of Ficus, nor any kind of Laurinete. It has, howi 



? representing, probably, the highest degree c 



Ohio, for . van.ple, while tin- Tertiary Horn of the Western Terri- 

 tories, Colorado, and Wyoming, has from the Eocene to the upper 

 group, the Pliocene of California, representatives of species now 

 : he shores (Jnif . : Mexico, and extending even as far 

 south as Cuba and New Mexico. 



The description of eight species from Disc.., with two plates of 

 -.'closes tli is fourth part of the Arctic Flora. The 

 >p. • h> are m.»ll\ referable to Jurassic types. 



The volume under consideration has been prepared from speci- 

 mens collected b\ the Swe.lish Polar expeditions in the years 1872 

 and 1873. These specimens were examine d by I leer and described 

 "-" but the publication of the wort then ready has been 



meanwhile, the celebrated Professor has undertaken the 

 preparation of the floras of the <.l 'tiom "f 



Switzerland, beginning with that of the Carboniferous, just 

 L* The second part, that of the Jurassic, is complete 

 also, and ready to appear. The Carboniferous flora repre- 

 sents the plants of the Anthracite of Vallais, a formation of very 

 limited extent. The general character of these plants is that of 



deranceof i • '//•/'.''"■'''.«, i'-»j>'- 



ris, etc.; the Calamarbt a i 1 the < »*'"!?>■*, wlmh the author con- 

 siders as Conifers. A number of species of Ltpohultwhon and 

 Sr,; >■<■: . H'd a- it lias ,,bo >,,<'„ „o,,.-,,v.s 



hiVfoUu, tnfoli.Hhi. etc.. tin- largo Ab.ihuph.st*, -1. mn-u*,", 



.v ///;, „„„■;■', tt>r, pi»ri',„f>, wi :. 

 - • . 



point of view, 18 rather that of * 



is. But it has one species of \\,ih-t,m \y !,.•■;,. 

 with some ferns, Pecoptt • • 



are mostly.' '^ l]i -J" 



the Permian, and therefore rlie ';' " lc 



age of the formation have part of 'V " , 



' • ,-..■-_ 



h!, is the presence, upon the i«J 

 '- • ■ 



. • - •■ -■• .. ; -.-.'" ■ 



drawn and elongated on one side of the pinnae while they are con- 

 * Flora fossilis Helvetia Erste Lieferung. Die Steinkoblenflora. Zurich. 



