_xi + 388 pages. Price $1.68_

WORLD BOOK COMPANY

YONKERS-ON-HUDSON, NEW YORK 2126 PRAIRIE AVENUE, CHICAGO

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NEW-WORLD SCIENCE SERIES

_Edited by_ JOHN W. RITCHIE

The publication of books that "apply the world's knowledge to the
world's needs" is the ideal of this house and it is intended that the
different volumes of this series shall express this ideal in a very
concrete way.

_Completed_

HUMAN PHYSIOLOGY. By _John W. Ritchie_, Professor of Biology, College
of William and Mary. A text on physiology, hygiene, and sanitation for
upper grammar or junior high schools. _$1.60._

LABORATORY MANUAL FOR HUMAN PHYSIOLOGY. By _Carl Hartman_, University
of Texas. A manual to accompany Ritchie's Human Physiology. BOUND IN
PAPER AND CLOTH. _60 cents and $1.00._

SCIENCE FOR BEGINNERS. By _Delos Fall_, Albion College, Michigan. A
beginning text in general science for intermediate schools and junior
high schools. _$1.68._

EXERCISE AND REVIEW BOOK IN BIOLOGY. By _J. G. Blaisdell_, Yonkers, N.
Y., High School. A combined laboratory guide, notebook and review
book for students' use. Written from the standpoint of efficiency
and furnishing material for a year's work and to accompany any one of
several high-school texts in general biology. BOUND IN STRONG PAPER.
_$1.20._

TREES, STARS, AND BIRDS. By _E. L. Moseley_, Ohio State Normal
College, Bowling Green. A book of outdoor science for junior high
schools and the upper grammar grades. _$1.80._

PERSONAL HYGIENE AND HOME NURSING. By _Louisa C. Lippitt_, University
of Wisconsin. A practical text for use with classes of young women in
vocational and industrial high schools, colleges, and normal schools.
_$1.68._

SCIENCE OF PLANT LIFE. By _E. N. Transeau_, Ohio State University. A
scientific and very practical text for high schools. _$1.88._

ZOOeLOGY. By _T. D. A. Cockerell_, University of Colorado. A text for
college use. _$3.60._

EXPERIMENTAL ORGANIC CHEMISTRY. By _A. P. West_, University of the
Philippines. A text for college use. _$3.20._

COMMON SCIENCE. By _Carleton W. Washburne_, Superintendent of Schools,
Winnetka, Illinois. Especially made for junior high schools. _$1.68._
Also _Manual_ for above, _20 cents_.

_Other volumes are also in preparation._

WORLD BOOK COMPANY

YONKERS-ON-HUDSON, NEW YORK 2126 PRAIRIE AVENUE, CHICAGO

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INDIAN LIFE AN