30 Bulletin of the Brooklyn Entomological Society. Vol. XIV 
BOOKS. 
Injurious Insects and Useful Birds. By F. L. Wasupurn, M.A. 
(Lippincott’s Farm Manuals.) (J. B. Lippincott Co., $2.50.) 
This book, as the author tells us, has been written “to supply the needs of 
high schools where agriculture is taught, and of agricultural colleges which 
demand a good text-book that is not too technical.” Mr. Washburn’s com- 
petence for the work is beyond question. The chief difference between 
this and other economic entomologies is the excellently illustrated part on 
birds. Very naturally, the methods for insect destruction are based on 
the latest and best work. This is a useful book for the working entomolo- 
gist’s shelf, as it brings the scattered results of many economic workers into 
a compact compass. 
Main Currents of Zoology. By Wm. H. Locy, Ph.D., Sc.D. 
(Henry Holt & Co., 1918. $1.35.) 
Biology, as a whole, is a science of infinite vistas. Its adepts must, in 
the nature of things, restrict themselves to far more limited spaces, with 
discernible metes and bounds, whence we have the sundry divisions of our 
science of life. But that we may not become narrow, each, particularly we 
entomologists, should keep in touch with the main stream of science toward 
which our efforts flow. Few of us have the time, the means or the burning 
desire to go to the original sources and from them extract the broadening 
thoughts they carry. To us of little time, Dr. Locy’s work is a boon; we 
can follow as a connected whole the stream of zoology from the Greeks 
to the Renaissance, and through Lamarck and Darwin to Mendel and the 
moderns. “Zodlogical progress represents a stream of thought” is the 
text of this work. To help us get our bearings in relation to zoology, we 
entomologists may trust to this guide. ‘We need it to extend our horizons. 
J.R. T.-B. 
Owing to increased cost, the Publication Committee has decided to 
make a charge for authors’ separates in excess of the gratis 25. This will 
be 4c. each for papers of one to four pages, 5c. for 5 to 8 pp., 6c. for 9 to 
I2 pp., proportionately for longer. Special covers will be $1.50 for the 
first fifty. Half tone plates 1c. additional. 
