23G 



Among the described fossils, C. macrophyllus much resembles 

 Buettneria perplexans Ckll., also from Florissant. B. perplexans 

 has a five-lobed calyx, the lobes or sepals about 9.5 mm. long. 



C. macrophylliLS was found at Station 14, Florissant {W. P. 

 Cockerell) . The mollusc Planorhis florissantensis occurs on the 

 same slab, about 25 mm. from the plant. 



REVIEWS 



Scott's Evolution of Plants* 



This is one of the most fascinating and, at the same time, 

 illuminating "popular" books on science that has appeared in 

 some time; the style has a distinct literary value, and the state- 

 ments have clearness and lucidity such as only a master can 

 command. The scope of the book is much more restricted than 

 the title indicates, for the subject of the evolution of plants is 

 treated chiefly with reference to the fossil evidence (p. 20). 

 The questions considered are (p. 21): (i) The evolution of the 

 true flowering plants or angiosperms (Chapters II and III); 



(2) The evolution of the seed-plants generally (Chapter IV) ; 



(3) The evolution of the great groups of the higher cryptogams, 

 i. e., of those spore-plants which share with the seed-plants the 

 possession of a vascular system (wood and bast) (Chapters V 

 to VII). 



It is of interest to note, in passing, the order of topics, as given 

 above, which is a direct reversal of the order of evolutionary 

 development. In view of the claim, now so frequently and em- 

 phatically urged, that any method of treatment of the subject 

 matter of botany that departs from the supposed order of phy- 

 logeny is undesirable and "illogical," it is instructive to note the 

 entire success of the author's inverse order of treatment. One 

 could hardly claim, in seriousness, that the reader loses anything 

 of either clearness or accuracy, by approaching, even for the first 

 time, the history of development as here recorded. 



Every specialist bemoans the neglect of his own corner by 

 those who are absorbed in other corners, but it is doubtless 



* Scott, Deunkinfield Henry. The Evolution of Plants pp. 1-256. /. 1-25. Henry- 

 Holt and Co., New York, and Williams and Norgate, London. 1911. (A volume 

 of The Home University Library of Modern Knowledge.) 



