908

THE COLLIERY GUARDIAN.

October 30 1914.

Telegrams—'1 Original, Manchester."

DIPLOMA of

FRANCO-BRITISH

Ip08.

Code—Uth Edition A K V.



SINGLE RAM PUMP.

DOUBLE RAM PIT PUMP.

HONOUR,

EXHIBITION,

1908.

Nafioual Telephone No. 2002.

DOUBLE RAM PUMP.

JOHN CAMERON Ltd,

EDWIN COTTAM & Co. LTD

Cardiff <& Rotherham.

LAMINATED RAILWAY CARRIAGE AND WAGON
SPRINGS, VOLUTES, CONICALS, SPIRALS, &c.

STEEL CASTINGS.

Bute Steel and Spring Works, CARDIFF.
Don Spring Works,	ROTHERHAM.

Don Steel Foundry,	„

TURBON.

The LATEST THING in FANS.

Equally suitable for Mine Ventilation, forced and induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,

--- FOR THE -

TURBON PATENT FAN CO. LTD,

LON'DON” Address—	■■y w”

34, Victoria Street, S.W.	.

Established 1800.	—	Telephone No. 577.

BRASS TIME CHECKS

JOHN LAWSON & SONS,

Manufacturers of every kind of

STEEL STAMPS, LETTERS,

FIGURES, BRANDS, STENCIL

PLATES, &c.

Roebuck Letter Works, 26, Carver Lane, SHEFFIELD.

PERFORATED PLATES

FOR

COAL SEPARATING
PROCESS.

THOMAS HUDSON LTD

COATBRIDGE.

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.), &c.

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 Ceag Lamp.

if® MBS
'A.

3 Y’4 1



STEEL
PIT PROPS
(Patented).

British Made.

THE COLLIERY GUARDIAN CO. LTD.,

30 & 31, Furnival Street, Holborn, London, E.C.

Greatest Possible Output.
Liberty of Movement.
Maximum of Safety.
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Highest Efficiency
combining
Resistance of Pressure
with

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