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. Illlustrated. $1.00.
Brown's Good Health for Girls and Boys. Physiology and hygiene for intermediate grades. 176 pages. Illustrated. 45 cents.
Clark's Practical Methods in Microscopy. Gives in detail descriptions of methods that will lead the careful worker to successful results. 233 pages. Illus. $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.
Colton's Elementary Physiology and Hygiene. For grammar grades. 317 pages. Illustrated. 60 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 Commercial and other Sponges. Illustrated. 43 pages. Paper. 20 cts. |
| IV. | Agassiz's First Lesson in Natural History. Illus. 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.