ARITHMETIC.
FRENCH'S FIRST LESSONS IN NUMBERS. First Lessons in Numbers, in their Natural Order: First, Visible Objects; Second, Concrete Numbers; Third, Abstract Numbers. By John H. French, LL.D. Illustrated. 16mo, Half Leather, 25 cents.
FRENCH'S ELEMENTARY ARITHMETIC FOR THE SLATE. Elementary Arithmetic for the Slate, in which Methods and Rules are based upon Principles established by Induction. By John H. French, LL.D. Ill'd. 16mo, Half Leather, 37 cts.
FRENCH'S MENTAL ARITHMETIC. Mental Arithmetic, in which Combinations of Numbers, Solutions of Problems, and Principles of Arithmetical Analysis are based upon the Laws of Mental Development. By John H. French, LL.D. Illustrated. 16mo, Half Leather, 36 cents.
NATURAL SCIENCE.
FIRST LESSONS IN NATURAL HISTORY AND LANGUAGE. Entertaining and Instructive Lessons in Natural History and Language for Primary and Grammar Schools. 12mo, Cloth, 35 cents.
THE CHILD'S BOOK OF NATURE. The Child's Book of Nature, for the Use of Families and Schools: intended to aid Mothers and Teachers in Training Children in the Observation of Nature. In Three Parts. Part I. Plants. Part II. Animals. Part III. Air, Water, Heat, Light, &c. By Worthington Hooker, M.D. Illustrated. The Three Parts complete in One Volume, Small 4to, Half Leather, $1.12; or, separately, in Cloth, Part I., 45 cents; Part II., 48 cents; Part III., 48 cents.
HOOKER'S FIRST BOOK IN CHEMISTRY. A First Book in Chemistry. By Worthington Hooker, M.D. Ill'd. Revised. Square 4to, Cloth, 48 cts.
FARADAY'S CHEMISTRY OF A CANDLE. Chemistry of a Candle. A Course of Six Lectures on the Chemical History of a Candle, to which is added a Lecture on Platinum. By M. Faraday. Edited by W. Crookes. Illustrated. 16mo, Cloth, $1.00.
FARADAY'S PHYSICAL FORCES. Physical Forces. A Course of Six Lectures on the Various Forces of Matter, and their Relations to Each Other. By M. Faraday. Edited by W. Crookes. Illustrated, l6mo, Cloth, $1.00.