556 The American Naturalist. [June, 
This book is well suited for class room work. Its technique is 
stated in clear and concise language, accompanied with numerous 
illustrations. ‘The writer having used this for a large class is prepared 
to say that it is an excellent work of its kind. . 
Another hand-book intended for a larger circle of readers is Wood- 
head’s' small volume on Bacteria and their Products. It treats the 
subject in a somewhat different manner than the others. It gives con- 
siderable attention to historical matters, and treats quite fully the 
different systems of classification used by Ehrenberg, Cohn, Van 
Tiegham, Zopf, De Bary, Hueppe and Fliigge. The chapter on fer- 
mentations contains a great deal on chemistry, but it is far from being 
a popular exposition of the question. The author has of course largely 
drawn from Hansen, Pasteur, and Schiitzenberger. The author uses 
the word parasite and saprophyte in a somewhat peculiar way. He 
speaks of the bacteria of the mouth.as being parasites, contradicting & 
previous statement made with reference to parasitic bacteria. The 
work has been edited rather carelessly, the word “ parasiticism ” for 
parasitism occurs in several places as well as the word “ saprophyti- 
cism. ”—L. H. PAMMEL. 
Report on the Fish and Fisheries of the United States 
for 1888.°—This volume, an octavo of 902 pages, contains in addition 
to the Reports of the Commissioner, Hon. Marshall McDonald and his 
two assistants, 11 important papers bearing upon the Fish Industry- 
The results of the sea-coast inquiries conducted during the year 1888 
are embodied in the reports of Mr. J. W. Collins and Lieutenant 
Commander S. L. Tanner. The work plished at the laboratory of 
Woods Holl, Massachusetts is reported on by Mr. J. A. Ryder. Notes 
on Entozoa of Marine Fishes, with descriptions of new species and the - 
anatomy of Thysanocephalum crispum Linton are given by Mr. E 
n. 
Number 8 in the series of Appendices is a review of the Fresh-water 
Sunfishes of North America by Mr. C. H. Bollman. Itis the beg 
ning of the systematic investigation of interior waters by volan oe 2 
naturalists under the direction of Dr. D. S. Jordan. The Apoda 
Fishes inhabiting the waters of America and Europe are re iewed by 
*Bacteria and their Products. The contemporary Science series, edited by ee : 
lock Ellis, pp. 459, with 20 photo-micographs. London, Walter Scott, 24 Want 
Lane, Charles Scribner Sons, New York, 1892. 
SU. S. Commission of Fish and Fisheries. Part XVI. Report of the commission 
for 1888. Washington, 1892. n 
