1896.] Recent Literature. 733 
to the knowledge of mineral deposits in this country. The statistics of 
production, and of imports and exports, were collected by experts, 
whose names are given at the heads of the several chapters, and are, 
therefore, unquestionable. The arrangement of the material is conve- 
nient for reference, and a good index completes the work. 
An Introduction to the Study of Zoology.'—This book, as 
stated by the author, is a kind of guide-book to beginners in the study 
of the animal kingdom. Among other good points made by Mr. Lind- 
say is a recommendation of a course of study in his advice to students, 
and suggestions as to the best books to buy for those whose time or 
money is limited. This forms Part III. Parts I and II treat respect- 
ively of the general principles of the subject and systematic zoology. 
Part I is concise, but clear, and on the whole up to date. The system- 
atic part, however, is weak, by reason of the lack of clear, precise de- 
finitions. This is particularly true of the Vertebrata; and, in general, 
no advantage has been taken of the discoveries of paleontology. 
The illustrations are numerous and “taking.” On the whole, the 
volume will be of interest and value to those whose wants it is intended 
to meet, i. e., the adult student, who wishes a first-lesson book which is 
not milk for babes. 
The Cranial Nerves of Batrachia.’°—This paper is a reprint 
in book form of an article published in the Journal of Morphology, Vol. 
X, No.1. The author confines himself to a discussion of the V, VII 
IX and X nerves, including other nerves in the description only as 
they come into connection with those specified. After an explanation 
of the technique employed, a detailed description of the nerves and 
their components is given, followed by a comparative morphology of 
components. The closing chapter deals with the relation of the cranial 
and spinal nerves, the relations of the pre- and post-auditory nerves, 
and the bearings which the results of the author’s studies have upon the 
classification of the nerves and their segmental relations. 
Especial light is thrown on this subject by this research, which in- 
cludes as an especial feature the determination for the first time of the 
motor and sensory fibres in each case. The monograph is one of espe- 
cial excellence. 
5 An Introduction to the Study of Zoology. By B. Lindsay. London, 1895, 
Swan, Sonnenschein & Co. New York, Macmillan & Co. $1.60. 
ê The Cranial Nerves of Amphibia. By Oliver S. Strong. Boston, 1895. Ginn 
& Co., Pub. 
