RADIUM
AND OTHER
RADIO-ACTIVE ELEMENTS.
A Popular account of Radium and other Radio-active
Elements treated experimentally.
Including a number of Radium Photographs and other
Illustrations.
By LEONARD A. LEVY and HERBERT G. WILLIS.
PRICE 2s. 6d. net; post free 2s. pd.
Contents
Introduction. — Chap. I. The Discovery of Radium ; its
Extraction. — Chap. II. The Radium Emanation. — Chap. III.
Physical Effects (Electrical and Magnetic). — Chap. IV. Phy-
sical Effects (continued). — Chap. V. Chemical Effects. —
Chap. VI. Actions on Animal Life and Living Tissues. —
Chap. VI I. Other Radio-active Elements. — Appendix. —
Experimental Appaiatus.
PERCIVAL MARSHALL & CO.,
26-29, POPPIN'S COURT, FLEET STREET, LONDON, E.C.
RADIUM
SPINTHARISCOPES.
AS DESIGNED BY
SIR WILLIAM CROOKES, F.R.S.,
For Demonstrating the Radio-activity of Radium.
KUNZITE.
THE NEW MINERAL
Responding in a high degree to the Emanations from Radium.
ZINC SULPHIDE SCREENS.
CALCIUM SULPHIDE— Phosphorescent.
ZINC SULPHIDE— Phosphorescent.
PITCHBLENDE— Specimens.
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