. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . Also ELECTROMETERS made in accordance with the publishedspecifications of Dr, F. Dolezalbk. Price £7 10 Full Particulars on application. 0 London Office and Showroom ; THE CAMBRIDGE SCIENTIFIC INSTRDMENT COIVIPANY, kllVIITED. HEAD OFFICE AND WORKS:— CAMBRIDGE, ENGLAND. -92, HATTON GARDEN, RADIUM IN ITS EMPLOYMENT IN THERAPEUTICS AND FOR SCIENTIFIC RESEARCH. Prices on . apjplication. Surface each 7/6. Throat £1 1/- activity. per sq. inch, -/9 per lb., 8/- per gramme, 1/- each 25/- APPLICATORS (MacL


. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . Also ELECTROMETERS made in accordance with the publishedspecifications of Dr, F. Dolezalbk. Price £7 10 Full Particulars on application. 0 London Office and Showroom ; THE CAMBRIDGE SCIENTIFIC INSTRDMENT COIVIPANY, kllVIITED. HEAD OFFICE AND WORKS:— CAMBRIDGE, ENGLAND. -92, HATTON GARDEN, RADIUM IN ITS EMPLOYMENT IN THERAPEUTICS AND FOR SCIENTIFIC RESEARCH. Prices on . apjplication. Surface each 7/6. Throat £1 1/- activity. per sq. inch, -/9 per lb., 8/- per gramme, 1/- each 25/- APPLICATORS (MacLeod) BARIUM PLATINOCYANIDE SCREENS CALCIUM SULPHIDE, Luminous KUNZITE POLONIUM, BISMUTH and COPPER DISCS .PITCHBLENDE SPECIMENS. Price according toURANIUM NITRATETHORIUM HYDROXIDE .. PADSWILLEMITE, Natural Specimens„ Artificial Specimens ZINC SULPHIDE, Active „ „ SCREENS, 10 X10 centimetres Special Quotations for Quantity, CHEMICALS AND APPARATUS FOR SCIENTIFIC RESEARCH.—Write for List. per oz., 4/ per oz., 1/- per lb., 48/- each 10/6 „ 2/- „ 1/- per gramme, 1/6 each 7/6. SPINTHARISCOPES Showing the Scintillations of Radium,21/- W. MARTIN DALE, ^-^° ^ Chemist,10, NEW CAVENDISH ST., W. Telegraphic Address: Martindale Chemist London. Telephone: 1797 Paddington. HELIU AND ARGON. Prepared under the direction of SIR Wm. RAMSAY, , , BY THOMAS TYRER & GO., bTD. STRATFORD, LONDON, E., And sold by ihem IN TUBES, 100 , 25s. 6 Dols. THOMAS TYRER & CO. undertake Technical Operations for Inventorsand Patentees by arrangement. SPINTHARISCOPES As devised by Sir Wm. THE SCINTILLATIONS OF RADIUM. In Leather .. £1 1 | Cheaper forms 14/-and 10/6STRUTT^S RADIUM MINERALS AND SALTS. Specimens, mounted in Crookes Vacuum Tubes, sliowing fluorescenceunder Cathode stream, 15/- each. EXPERIMENTAL WORK IN GLASS OR METAL, A. C. COSSORy^STpariTngdon^acI, LONDON,


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectradioac, bookyear1904