July 31 1914.

THE COLLIERY GUARDIAN.

287

SANDYCROFT

CASCADE” MOTOR Driving Haulage Gear.

Demy Octavo, 176 pages Cloth.

45 Original Photographs and Diagrams.

Price 6s. 3d
(post free).

WHICH HHVE H

20 YEARS REPUTATION FOR EFFICIENCY
IN EVERY CONCEIVABLE DRIVE.

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, MB.. 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.

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

YOUR INTERESTS WILL BE PROTECTED.

Patentees &Sole Makers

David Bridge & C- lie-

John St. Works, Castleton, Manchester.

PATENT

AUTOMATIC

REflSERi

OVER 1,qoo PAIRS SOLD I
NEW PfltENT NO 20901,1913. I

w/?/r£ fop photos. ro sol£ mpnup>?

O' DODD
CANNOCK.

£3‘

PER PAIR

“SHELTON” IRON.

“SHELTON” STEEL (.-= )
“GRANVILLE” PIG IRON <=‘>

Steel Pit Girders & Colliery Rails a Speciality; also High-class Bar Iron for Couplings, &c.

IRON & STEEL BARS, ANGLES, TEES, CHANNELS, GIRDERS,

PLATES & SHEETS, STEEL BILLETS, BLOOMS & SLABS.

First-class

Medals—

Paris, 1885;

London, 1862.

Gold Medals—
Paris, 1878;
Melbourne,
1881.

Enquiries to—	_

THE SHELTON IRON, STEEL & COAL CO. LTD., 5S5KKS?

Or 122, Cannon Street, London. E.C.

Teletrranhic Address: “ Sbelton, Stoke-on-Trent.” Tel. No. 11 and 253.. I Telegraphic -.dress : “ Sheltonian, London." Tel. No. 886 Bank.

A/P Recently issued under Full particulars on application.

JLJ JK.JL JL.	A.W AIA Wft	the Cnal Min A c Arte the colliery guardian co. ltd.,

J	7 L11C	HLlllCd Avid.	30 &31. FurnivaUtreet, Holborn,London,E.C.

“TYNOS”

NON CONDUCTING

Boiler & Pipe Coverings

On Admiralty & War Office Lists.

S.	T. TAYLOR & SONS,

T,	l. Add. TYNOS WORKS,
scots wood " Scotswood-on-Tyne.

COLLIERY OWNERS MANUFACTURING BRICKS
SHOULD SUBSCRIBE TO

THE BRITISH CLAY-WORKER

The Organ of the Brick and Tile Trades.

Published Monthly. Subscription : 8s. per annum, post free.
Send for Specimen Copy to the Publisher,!

The BRITISH CLAY-WORKER, 43, Essex-St., LONDON, W.C.

£££ SAFETY UAIVIPS,
LAMPROOM FITTINGS,
Enamelled Notice Plates,

—— APPLY -

PROTECTOR L*Mp *^°T1N0 CO. LTD., ECCLES.

The most efficient bindiner agent
for making Concrete and Mortar.

KAYE’S CEMENT.

A high-grade product, about double the
strength of ordinary standard qualities.

KAYE & CO. LD., Southam Works, RUCBY.

^*1*1

The New MAGNET Underground Safety

Lamp Re-Lighter.

PATENT APPLIED FOR.

Self-Contained.

No Batteries and no Switches used

Only one Contact.

Can be adapted to relight any form
of Safety Lamp.

The Lamp is totally enclosed in
Gas-proof chamber when being
re-lighted, and can only be operated
by authorised persons.

Can be used with absolute safety
in the most gaseous atmosphere
of the mine.



THE SIMPLEST, LIGHTEST AND
CHEAPEST UNDERGROUND RE-
.. LIGHTER 0(1 THE MARKET..

Write
for
Illus-
trated
Price
List.

OPEN.	CLOSED.

SOLE AGENTS FOR GREAT BRITAIN :

Specialities: LATHES & SAW BENCHES.

First class at competitive prices.

ROWLAND C. FOOT & Co. 11, Queen Victoria St., London, E.C.

E. THOMAS <5 WILLIAMS ltd,

Cambrian Lamp Works, A herd are, SOUTH WALES.

Telephone No.: 7 ABERDARE.	Telegraphic Address: LAMPS, ABERDARE.