Page:Radio-active substances.djvu/103

 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.

Write for particulars to

JOHN J. GRIFFIN & SONS, Ltd.,

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