128 THE MICROSCOPE. 



no place in our literature, and here we find our best criticism. It is 

 not complete enough to rank as a " book of reference," and its too 

 redundant descriptions and deficient "laboratory methods" will 

 keep it from becoming the companion of the beginning student. 

 Great jirominence is given to the bibliography, the most valuable 

 feature of the work. 



Wm. Wood & C"o. have given us their usual fine clear type and 

 substantial binding, and they have made the volume both attractive 

 and durable. 



Bacter[.\, the S.MALLKsr OF Llvi.NO ORGANISMS. Hy Dr. Ferdinand Cohn, 

 Professor in the University of Breslau. Translated by Cha<:. S. DoUey, 

 Rochester, N. Y., 1881. pp. 30. One lithographic plate, 22 figures. 



This translation is especially valuable from the fact that 

 the translator has added notes, thus giving the very latest 

 views of Dr. Cohn on this subject, for the author has changed some 

 of his views since writing the original article. These changes are 

 all given in the foot notes. Dr. Cohn is authority on this subject, 

 and our readers will be greatly pleased with a perusal of this trans- 

 lation. 



Trichin.h, how to Detkct them, and how to .Avoid them. By John 

 Phin, Editor of the "American Journal of Microscopy." pp. 20, figs. 9. 



This is a popular account of the habits, modes of propagation 

 and means of dissemination of these "pork worms." It describes 

 the new Trichinoscope recently introduced by the Bausch &c 

 Lomb Optical Company of Rochester, N. Y. See editorial. Any- 

 one wishing a complete account of the habits of these animals with 

 the means for their detection should send to Mr. Phin for a copy. 



Catai,u(;c:-, ov ihk Pii.i:no(:amoi:s and Vascular CRVPTor.AMot's 

 Plants or Michigan. By Chas. F. Wheeler and Erwin F. Smith, 

 Hubbardston, Mich. pp. 105. One double page map of state of Michi- 

 gan, 1881. Price, fifty -cents. 



It is difficult to estimate the amount of labor bestowed on a 

 catalogue of this kind. .\s a work of reference it is highly valuable 

 and the authors have spared no pains to make it thoroughly reliable. 



Chart op the Ckaniai. Nerves. By Geo. B. .\yres, M. D., I*rofessor of 

 Anatomy, Omaha Medical College, iSSi. 



This is :x convenient and accurate arrangement of this difficult 

 part of .Anatomy. .Address tlie author at ()maha, Nebraska. 



