109 



present volume aspires to replace. The relative space given in 

 the two works to the various major divisions of the subject can 

 be seen by a direct comparison : 







Campbell. 



Bonn Text. 



Introduction and General Morphc 



>logy, 



65 



I30 



Physiology, 





34 



124 



Botanical System, 





395 



271 



Ecology, 





35 





Distribution in time and space, 





21 





Total pages, 





55o 



525 



Of necessity much of the work is a compilation from many 

 sources but it seems strange that in following the systematic ar- 

 rangement of Engler and Prantl there has not been more of an 

 attempt to bring that work, which is already comparatively old in 

 parts, at least up to the standard suggested by its own authors, 

 even if the additions made by other workers were not considered. 

 It is inexcusable, for instance, that the complex Helvellaceae 

 should continue to stand next above the simple Exoascaceae, a 

 blunder so patent that the incongruity was pointed out in the' 

 German text itself before its completion. Class and ordinal 

 terminology follows a hap-hazard arrangement wholly at variance 

 with the principles enunciated at Berlin itself, and generally 

 accepted wherever the importance of a consistent terminology is 

 recognized. Thus the author accepts Howe's class Anthocerotes 

 as a coordinate group with the Hepaticae, but the name is 

 changed to class Anthocerotales, thus improperly using a termi- 

 nation reserved for a group of ordinal rank alone. 



The bibliographies at the close of the chapters are curious in 

 their detail, and one is at a loss to know the motif in the selec- 

 tion of titles. On the one hand papers of comparative unimpor- 

 tance are freely cited, and on the other standard works are wholly 

 omitted. It is hard to understand why a page should be wasted in 

 a tmiversity text-book in citing the long list of recent elementary 

 texts in botany both English and American, while among the 365 

 bibliographic citations from American botany no reference what- 

 ever is made to such classics as Torrey and Gray's Flora of North 

 America or Harvey's Nereis. A bibliography of American 

 lichens that omits all reference to the works of Edward Tucker- 



