THE CHEMICAL NEWS, JANUARY 25, 1918 THE CHEMICAL NEWS AND JOURNAL OF PHYSICAL SCIENCE. WITH WHICH IS INCORPORATED THE "CHEMICAL GAZETTE." A Journal of Practical Chemistry IN ALL ITS APPLICATIONS TO PHARMACY, ARTS, AND MANUFACTURES. EDITED BY SIR WILLIAM CROOKES, O.M., D.Sc., F.R.S., &c. VOLUME CXVI.—1917. LONDON: PUBLISHED AT THE OFFICE, 16, NEWCASTLE STREET, FARRINGDON ST., E.C. 4. AND SOLD BY ALL BOOKSELLERS. MDCCCCXVII. Property of Chemical Laboratory of Harvard Collo THE CHEMICAL NEWS AND JOURNAL OF PHYSICAL SCIENCE Established Proprietor and Editors (WITH WHICH IS INCORPORATED THE CHEMICAL GAZETTE"). in the Year 1859. Sir Wm. Crookes, [Copyright Vol. 116.-No. 3006 [served. ARTICLES CONTENTS. Friday, July 6, 1917. PAGE I ..... Registered as PRICE 4d. a Newspaper. POST FREE 41d. T. TYRER & CO., Ltd. Stirling Chemical Works, STRATFORD, LONDON, E OHEMICALS for Analysis, Research, and Technical purposes. TECHNICAL EXPERIMENTS carried out on a MANUFACTURING SCALE. Inquiries solicited from INVENTORS and FATENTEES (especially Foreign) under the New Act, 1906. CHEMICAL APPARATUS AND REAGENTS. Pure Chemicals for Research Work. A. BOAKE, ROBERTS, & CO. (LIMITED), JOHN J. CRIFFIN & SONS, LTD., Stratford, London, E. KINGSWAY, LONDON, W.C |