419 



bacteria, so far as these are concerned in relation to some common 

 diseases affecting crops or with nitrification and so forth. 



A very commendable feature consists in the numerous text 

 illustrations which are entirely original and, where not simply 

 diagrams, have been drawn by the author from living or natural 

 specimens. Those of the grasses are particularly good, and shown 

 of natural size, while the seeds are uniformly magnitied ten 

 diameters for easy comparison. Finally, there is a copious index. 



The work throughout is excellent, and must long remain the 

 standard English text-book on Agricultural Botany. 



G. C. K. 



One Thousand Objects for the Microscope, with a few hints 

 ON Mounting. By M. C. Cooke, M.A., LL.D., A.L.S. 



179 pages, 13 plates, 38 figures in the text. London, 1900 : 

 F. Warne & Co. Price 2s. 6d. 



Previous editions of this well-known popular handbook — the 

 "Thousand and One Nights " of our early microscoj)ical days — 

 consisted entirely, in strict accordance with the title, of brief 

 descriptions of one thousand microscopic objects. In this new 

 edition, however. Dr. Cooke has added a preliminary part con- 

 taining a considerable amount of useful information on the 

 microscope itself and its accessories, and on the methods of 

 collecting, examining, mounting, and storing objects. The 

 publishers have also considerably improved the appearance of 

 the book by printing it on larger and better paper, so that the 

 volume before us is a decided advance on former issues, and 

 the work will now, without doubt, prove more useful than ever 

 to beginners in the microscopical field. Nevertheless, as 

 Queketters, we cannot but regret that our " Father " has not 

 taken the opportunity to carefully revise the scientific names 

 giv^en in the descriptive part of the book. Many of these have 

 been obsolete for years. Even in groups which Dr. Cooke 

 has made his own — as, for example, the fresh- water Algae — nothing 

 has been done to bring the nomenclature up to date. 8uch 

 statements, too, as that " Four species of this genus [Furcularia] 

 are recorded in Britain," " Sir John Lubbock distinguishes this 

 [Cyclops hrevicornis] and six other species in the Kentish ponds 



Journ. Q. M. C, Series II.— No. 47. 30 



