REVIEWS 203 



100-106. Discusses the forms from R. nidi's to end of genus, 

 with a list of Watsonian counties and vice-counties in which each is 

 found. 



Two HYBRID EPILOBIA NEW TO BRITAIN. By Rev. E. S. 

 Marshall, M.A., F.L.S. Journ. ot., April, pp. 106-108. E. 

 alsinefolium x obsciiruin, sent from Clackmannanshire and from 

 Stirlingshire by Mr. R. Kidston. 



REVIEWS. 



THE CAMBRIDGE NATURAL HISTORY. Edited by S. F. Harmer, 

 M.A., and A. E. Shipley, M.A. Vol. III. MOLLUSCS. By the 

 Rev. A. H. Cooke, M.A. BRACHIOPODS (Recent). By A. E. 

 Shipley. BRACHIOPODS (Fossil). By F. R. C. Reed, M.A. 

 (London: Macmillan & Co., 1895.) 8vo, cloth, pp. xiv+536. 

 4 Maps and 334 Woodcuts. 



" The Cambridge Natural History " differs from all others in the 

 important feature that it is the production of, and emanates from, 

 a band of specialists whose Alma Mater occupies the premier 

 position in the world of Natural Science. As the result, we find, 

 perhaps for the first time in the history of such works published in 

 this country, that the great subject is to be treated in accordance with 

 its merits, and thus six out of the ten volumes forming the complete 

 set are very properly to be devoted to a great sub-kingdom of the 

 Invertebrata. The fact that the numerous illustrations are practically 

 all new and original is another most welcome and commendable 

 feature of the publication. 



The volume before us, though it forms the third of the set, is the 

 first issued. It is a portly book, and in it we have a well-written 

 and most comprehensive account of the great classes Mollusca and 

 Brachiopoda, which will for a long time serve as a readily acces- 

 sible repertory of reference for students and teachers of Biology. 

 Necessarily a compiled work, the task of compilation has been care- 

 fully and accurately performed. The lion's share of the work falls 

 to the Mollusca ; the Brachiopods, both recent and fossil, being 

 somewhat summarily dismissed in fifty pages. Mr. Cooke enters into 

 his subject most thoroughly and systematically, and there is scarcely 

 an aspect of it that does not receive its share of attention. The 

 account of geographical distribution is perhaps the fullest and best 

 part. The chapters on classification adopted follow those on 

 distribution, and in them we have the characteristics given of all the 

 families. The earlier chapters of the book are full of interest, 

 dealing as they do with the living animal, its habits, life-history, 



