114

THE ‘COLLIERY GUARDIAN.

July 10, 1914.

PULLEYS

Supplied to most of the largest Collieries and Cold Mines

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FOR ALL PURPOSES.

Demy Octavo 176 pages. Cloth.	Price 6s. 3d.

45 Original Photographs and Diagrams (post free).

Miners’ Nystagmus:

Its Causes and Prevention,
By T. LISTER LLEWELLYN, M.D., B.S. (Lond.), Ac.

WITH A PREFACE BY

Professor J. S. HALDANE, F.R.S., M.D.,
AND A LEGAL APPENDIX BY
DOUGLAS KNOCKER, M.B., Barrister-at-Law.

CONTENTS.

Description of the Eye—Anatomy : Physiology—(1) General
Description of the Disease—(2) Frequency and Resulting
Incapacity—(3) Historical Account of the Disease and
Theories of its Causation—(4), (5) and (6) Conditions
Determining the Occurrence of Nystagmus—(7) Diagnosis
and Prognosis—(8) The Etiology of Nystagmus—(9) Pre-
ventive Measures and Treatment—(10) Summary and
Conclusions — With Appendices: Legal Information —
Glossary—References and Bibliography—The Effects of
Deficiency of Oxygen on the Light of a Safety Lamp—
Test of Ce»g Lamp.

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A Practical Handbook for Colllory Electricians.

ELECTRIC CIRCUIT PROBLEMS

in Mines and Factories.

— BY —

ELLIS H. CRAPPER, B.Eng., M.I.E.E.,

Head of the Department of Electrical Engineering at the University of Sheffield

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THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C.