SCIENCE. 47 Roscoe — con tin ued. LESSONS IN ELEMENTARY CHEMISTRY, INORGANIC AND ORGANIC. With numerous Illustrations and Chromolitho of the Solar Spectrum, and of the Alkalies and Alkaline Earths. New Edition. Fcap. 8vo. i^s. 6d. {See iinder Two^VE.) Roscoe and Schorlemmer. — inorganic and or- ganic CHEMISTRY. A Complete Treatise on Inorganic and Organic Chemistry. By Sir Henry E. Roscoe, F.R.S., and Trof. C. Schorlemmer, F.R.S. With Illustrations. MediumSvo. Vols. I. and II.— INORGANIC CHEMISTRY. Vol. I. — The Non-Metallic Elements. Second Edition, revised. 2IJ. Vol. II. Part I.— Metals. i8j. Vol. II. Part II.— Metals. New and thoroughly Revised Edition. Zs. Vol. III.— ORGANIC CHEMISTRY. THE CHEMISTRY OF THE HYDROCARBONS and their Derivatives, or ORGANIC CHEMISTRY. With numerous Illustrations. Five Parts. Parts I., II., and IV. zis, each. Parts III. and V. i8j. each. Thorpe. — a series OF CHEMICAL PROBLEMS, prepared with Special Reference to Sir H. E. Roscoe's Lessons in Elemen- tary Chemistry, by T. E. Thorpe, Ph.D., F.R.S., Professor of Chemistry in the Normal School of Science, South Kensington, adapted for the Preparation of Students for the Government, Science, and Society of Arts Examinations. With a Preface by Sir Henry E. Roscoe, F.R.S. New Edition, with Key. i8mo. zs, Thorpe and Rucker. — a treatise ON CHEMICAL PHYSICS. By T. E. Thorpe, Ph.D., F.R.S. Professor of Chemistiy in the Normal School of Science, and Professor A. W. RiJCKER, Illustrated, 8vo. _In preparation. Wright. — METALS AND THEIR CHIEF INDUSTRIAL APPLICATIONS. By C. Alder Wright, D.Sc, &c., Lecturer on Chemistry in St. Mary's Hospital Medical School. Extra fcap. 8vo. 3^. 6d, BIOLOGY. Allen. — ON THE COLOUR OF FLOWERS, as Illustrated in the British Flora. By Grant Allen. With Illustrations, Crown 8 vo. 3^.6^/. [Na/tcre Series.) Balfour. — a treatise on comparative embry. OLOGY. By F. M. Balfour, M.A., F.R.S., Fellow and Lecturer of Trinity College, Cambridge. With Illustrations. Second Edition, reprinted without alteration from the First Edition. In 2 vols. 8vo. Vol. I. iSj. Vol. II. 2Ij. Balfour and Ward. — a GENERAL TEXT BOOK OF botany. By Isaac Bayley Balfour, F.R.S., Professor of Botany in the University of Edinburgh, and H. Marshall Ward, F.R.S., Fellow of Christ's College, Cambridge, and Professor of Botany in the Royal Indian Engineering College; Cooper's Hill. 8vo. [/« preparation.
