1897.] Recent Literature. 597 
counted for by known principles of chemistry and physics? The plain 
answer is, we do not know.—E. A. A. 
Miocene Mollusca and Crustacea of New Jersey.’—This 
important work is published in the Monograph (Vol. X XIV) Series of 
the U. S. Geological Survey. Very little attention had been given to 
the Miocene molluscan fauna of New Jersey when Mr. Whitfield began 
a systematic study of it. A list published by Mr. F. B. Meek, a few 
species described by different writers, and the work done by Prof. Heil- 
prin summarizes all the knowledge concerning this fauna up to 1887. 
The present work is based on the collections in the U. S. National 
Museum and the Philadelphia Academy of Natural Sciences. One 
hundred and four species are recognized and described, which, with the 
four species given in Prof. Heilprin’s list and two species of Bryozoans 
in Meek’s list would carry the number to one hundred and ten species. 
The species described are distributed as follows: Brachiopoda 1, 
Lamellibranchiata 61, Gasteropoda 39, Crustacea 1. All the species 
are figured on 24 page-plates. 
Sixteenth Annual Report U. S. Geological Survey, Parts 
III and IV.'—This report forms the eleventh in the series Mineral 
Resources of the United States. Part III treats of metallic products 
containing the usual summary of recent developments in the knowledge 
of the mineral deposits, the amount produced, its value, ete. in this coun- 
try, etc. and also in other countries which trade with the United States. 
Part IV embodies the latest information concerning the non-metallic 
products. The illustrations consist of maps, diagrams and figures in 
the text. 
We are informed that the cost of printing and binding is no longer 
charged for this book, and that by making prompt application to a 
Senator or Representative the volume may be obtained, as the Congres- 
sional distribution of the book will soon ensue. 
Glaciers of North America.‘—In an octavo volume of some 210 
pages Mr. Russell has condensed the existing knowledge of North 
* Monographs of the U. S. Geological Survey. Vol. XXIV. Miocene Mol- 
lusca and Crustacea of New Jersey. By R. P. Whitfield. Washington, 1894. 
* Sixteenth Annual Report of the United States Geological Survey. Part III, 
Mineral Resources of the United States, 1894, Metallic Products. Part IV Non- 
metallic Products. Washington, 1895. 
t Glaciers of North America. By I. C. Russell. Boston and London, 1897. 
Ginn and Co., Pub. 
