HARDY—Infinitesimals and Limits. Small 12mo. Paper. Pages 22. 6 Figures.

HART—Text Book of Chemical Engineering. 2nd Edition. 8vo. Pages XIV + 236. 229 Illustrations.

HART—Chemistry for Beginners. Small 12mo. Vol. I. Inorganic. Pages VIII + 214. 55 Illustrations, 2 Plates.

HART—Second Year Chemistry. Small 12mo. Pages 165. 31 Illustrations.

HART, R. N.—Leavening Agents. 8vo. Pages IV. +90. 13 Illustrations.

HEESS—Practical Methods for the Iron and Steel Works Chemist. 8vo. Pages 60.

HILL—A Brief Laboratory Guide for Qualitative Analysis. 3rd Edition. 12mo. Pages VIII + 104.

HINDS—Qualitative Chemical Analysis. 8vo. Pages VIII + 266.

HOWE—Inorganic Chemistry for Schools and Colleges. 8vo. 3rd Edition. Pages VIII + 443.

JONES—The Freezing Point, Boiling Point and Conductivity Methods. Pages VIII + 76. 2nd Edition, completely revised.