* * * * *

Lusk's Elements of Nutrition

~Elements of the Science of Nutrition.~ By GRAHAM LUSK, PH.D., Professor
of Physiology at Cornell Medical School. Octavo volume of 302 pages.
Cloth, $3.00 net.

~THE NEW (2d) EDITION--TRANSLATED INTO GERMAN~

Prof. Lusk presents the scientific foundations upon which
rests our knowledge of nutrition and metabolism, both in
health and in disease. There are special chapters on the
metabolism of diabetes and fever, and on purin metabolism.
The work will also prove valuable to students of _animal
dietetics_ at agricultural stations.

~Lewellys F. Barker, M. D.~ _Professor of the Principles and Practice of
Medicine, Johns Hopkins University._

"I shall recommend it highly to my students. It is a comfort
to have such a discussion of the subject in English."

Daugherty's Economic Zoology

~Economic Zoology.~ By L. S. DAUGHERTY, M. S., PH. D., Professor of
Zoology, State Normal School, Kirksville, Mo., and M. C. DAUGHERTY,
author with Jackson of "Agriculture Through the Laboratory and School
Garden." Part I: _Field and Laboratory Guide_. 12mo of 237 pages,
interleaved. Cloth, $1.25 net. Part II: _Principles._ 12mo of 406 pages,
illustrated. Cloth, $2.00 net.

~ILLUSTRATED~

There is no other book just like this. Not only does it give
the salient facts of structural zoology and the development
of the various branches of animals, but also the natural
history--the _life and habits_--thus showing the
interrelations of structure, habit, and environment. In a
word, it gives the principles of zoology and _their actual
application_. The economic phase is emphasized.

Part I--the _Field and Laboratory Guide_--is designed for
practical instruction in the field and laboratory. To
enhance its value for this purpose blank pages are inserted
for notes.

* * * * *

Drew's Invertebrate Zoology

~A Laboratory Manual of Invertebrate Zoology.~ By GILMAN A. DREW, PH. D.,
Assistant Director at Marine Biological Laboratory, Woods Hole, Mass.
With the aid of Former and Present Members of the Zoological Staff of
Instructors. 12mo of 213 pages. Cloth, $1.25 net.

~JUST READY--NEW (2d) EDITION~

The subject is presented in a logical way, and the type
method of study has been followed, as this method has been
the prevailing one