us. 64 pages.
Paper. 25 cts.

V. Hyatt's Corals and Echinoderms. Illustrated. 32 pages. Paper.
30 cts.

VI. Hyatt's Mollusca. Illustrated. 65 pages. Paper. 30 cts.

VII. Hyatt's Worms and Crustacea. Illustrated. 68 pages. Paper, 30
cts.

XII. Crosby's Common Minerals and Rocks. Illustrated. 200 pages.
Paper, 40 cents. Cloth, 60 cts.

XIII. Richard's First Lessons in Minerals. 50 pages. Paper. 10 cts.

XIV. Bowditch's Physiology. 58 pages. Paper. 20 cts.

XV. Clapp's 36 Observation Lessons in Minerals. 80 pages. Paper, 30
cts.

XVI. Phenix's Lessons in Chemistry. 20 cts.

Pupils' Note-book to accompany No. 15. 10 cts.

=Rice's Science Teaching in the School.= With a course of instruction
in science for the lower grades. 46 pages. Paper. 25 cents.

=Ricks's Natural History Object Lessons.= Information on plants and
their products, on animals and their uses, and gives specimen
lessons. 332 pages. Illustrated. $1.50.

=Rick's Object Lessons and How to Give Them.=

Vol. I. Gives lessons for primary grades. 200 pages. 90 cents.

Vol. II. Gives lessons for grammar and intermediate grades. 212
pages. 90 cts.

=Scott's Nature Study and the Child.= A manual for teachers, with
outlines of lessons and courses, detailed studies of animal and
plant life, and chapters on methods and the relation of nature
study to expression. 652 pages. Illustrated. Retail price, $1.50.

=Sever's Elements of Agriculture.= For grammar grades. Illustrated.
151 pages. 50 cents.

=Shaler's First Book in Geology.= A helpful introduction to the study
of modern text-books in geography. 272 pages. Illus. Cloth, 60
cts. Boards, 45 cts.

=Smith's Studies in Nature.= Combines natural history and language
work. 48 pages. Paper. 15 cents.

=Spear's Leaves and Flowers.= An elementary botany for pupils under
twelve. 103 pages. Illustrated. 25 cents.

=Wright's Seaside and Wayside Nature Reader, No. 4.= Elementary
lessons in geology, astronomy, world life, etc. 372 pages.
Illustrated. 50 cents.

See also our list of books in Science.

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

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Elementary Mathematics

=Atwood's Complete Graded Arithmetic.= New e