Read Ebook: Radio-Active Substances by Curie Marie

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PERCIVAL MARSHALL & CO.,

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.

RADIUM APPLICATORS

Its employment in Therapeutics and for scientific research.

RADIUM

ON SALE AND LET ON HIRE.--Write for Terms.

TERMS CASH WITH ORDER.

TRANSCRIBER'S NOTES

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