.

SHEPARD'S INORGANIC CHEMISTRY. Descriptive and qualitative; experimental
and inductive; leads the student to observe and think. For high
schools and colleges. $1.12.

SHEPARD'S BRIEFER COURSE IN CHEMISTRY, with chapter on Organic
Chemistry. 80 cents.

SHEPARD'S LABORATORY NOTE-BOOK. Boards. 35 cents.

SPALDING'S BOTANY. Practical exercises in the study of plants. 80
cents.

STEVENS'S INTRODUCTION TO BOTANY. Illustrated. $1.25. Key and Flora,
40 cents. Botany, with Key and Flora, $1.50.

STEVENS'S CHEMISTRY NOTE-BOOK. Laboratory sheets and covers. 50
cents.

VENABLE'S SHORT HISTORY OF CHEMISTRY. For students and the general
reader. $1.00.

WALTER, WHITNEY AND LUCAS'S ANIMAL LIFE. A laboratory guide. 50
cents.

WEED AND CROSSMAN'S LABORATORY GUIDE IN ZOOeLOGY. Emphasizes essentials.
60 cents.

WHITING'S PHYSICAL MEASUREMENT. Parts I-IV, in one volume. $3.75.

WHITING'S MATHEMATICAL AND PHYSICAL TABLES. Paper. 50 cents.

_For elementary works see our list of books in Elementary Science._

D. C. HEATH & CO., Publishers, Boston, New York, Chicago

Elementary Science.

AUSTIN'S OBSERVATION BLANKS IN MINERALOGY. Detailed studies of 35
minerals. Boards 88 pages. 30 cents.

BAILEY'S GRAMMAR SCHOOL PHYSICS. A series of practical lessons with
simple experiments that may be performed in the ordinary school
room. 138 pages. Illustrated. 50 cents.

BALLARD'S THE WORLD OF MATTER. Simple studies in chemistry and
mineralogy: for use as a text-book or as a guide to the teacher
in giving object-lessons. 264 pages. Illus. $1.00.

CLARK'S PRACTICAL METHODS IN MICROSCOPY. Gives in detail descriptions
of methods that will lead the careful worker to successful results.
233 pages. Illustrated. $1,60.

CLARKE'S ASTRONOMICAL LANTERN. Intended to familiarize students
with the constellations by comparing them with facsimiles on the
lantern face. With seventeen slides, giving twenty-two constellations.
$4.50.

CLARKE'S HOW TO FIND THE STARS. Accompanies the above and helps
to an acquaintance with the constellations. 47 pages. Paper. 15
cents.

ECKSTORM'S THE BIRD BOOK. The natural history of birds, with directions
for observation and suggestions for study. 301 pages. Illustrated.
60 cents.

GUIDES FOR SCIENCE TEACHING. Teachers' aids for instruction in Natural
History.

I. Hyatt's About Pebbles. 26 pages. Paper. 10 cts.
II. Goodale's A Few Common Plants. 61 pages. Paper. 20 cts.
III. Hyatt's Commercia