SD Zoology. 



utt,,, distributee a T. F. Al: 



rallel with the issue of the Ex&iccatm we* may expect tint 



ied, with creditable illustrate 



?dub for April and the Ameri 



JN aturaiist tor iviay last. And at length we may have 



"American Characese" illustrated in systematic order and v 



the completeness of fuller knowledge. a. ( 



2. Versuch einer Enttcicklwigsgeschichte der Pflaitztturelt 



besondere der Florengebiete seit der Tertiarperiode, von 



mann).— The first part ..f this History of the development of 



opical region 



•ihution of plants. . A very important work, which 

 y announce, hut which we may hope before long 

 unt of which it well deserves. a. g. 



r Isoetes in Worth America; by Dr. George Ex- 

 must announce this essay, though we have not 



, is separately issued. 



" the Transactions of 



the St. Louis 



;:;;; 





ihe 



- ( -D,u'c'l'x 



Bor 



deaux, Fe 

 Flora of 



■1-1 pages, 





