RAMSAY (Prof. William).—Experimental Proofs of Chemical Theory for Beginners. Pott 8vo. 2s. 6d.

REMSEN (Prof. Ira).—The Elements of Chemistry. Fcp. 8vo. 2s. 6d.

—— An Introduction to the Study of Chemistry (Inorganic Chemistry). Cr. 8vo. 6s. 6d.

—— A Text-Book of Inorganic Chemistry. 8vo. 16s.

—— Compounds of Carbon; or, An Introduction to the Study of Organic Chemistry Cr. 8vo. 6s. 6d.

ROSCOE (Sir Henry E., F.R.S.).—A Primer of Chemistry. Illustrated. Pott 8vo. 1s.

—— Lessons in Elementary Chemistry Inorganic and Organic. Fcp. 8vo. 4s. 6d.

ROSCOE (Sir H. E.) and SCHORLEMMER (Prof. C.).—A Complete Treatise on Inorganic and Organic Chemistry. Illustr. 8vo.—Vols. I. and II. Inorganic Chemistry: Vol. I. The Non-Metallic Elements, 2nd Edit., 21s. Vol. II. Parts I. and II. Metals, 18s. each.—Vol. III. Organic Chemistry: The Chemistry of the Hydro-Carbons and their Derivatives. Parts I. II. IV. and VI. 21s.; Parts III. and V. 18s. each.

ROSCOE (Sir H. E.) and SCHUSTER (A.).—Spectrum Analysis. By Sir Henry E. Roscoe. 4th Edit., revised by the Author and A. Schuster, F.R.S. With Coloured Plates. 8vo. 21s.