August 20, 1915.

THE COLLIERY GUARDIAN

395

________

Mining BOOKS

At Tremendous Reductions ! New Books at 25 per cent.
Discount! Books on Mining, Technical and all other Sub-
jects. Sent on Approval. State Wants. Send for Lists.
Books Purchased. W. & G. FOYLE, 121*123, Charing
Cross Road, London, W.C.

______________________________

OXYGEN.

The BRITISH OXYGEN Co. Ld.

The oldest and most extensive Oxygen producing
and distributing business in the World.

Factories in all industrial Centres equipped
with modern plants producing Oxygen of
unrivalled quality for use with RESCUE
APPARATUS.

ADDRESSES OF THE COMPANY’S WORKS:

LONDON _____

BIRMINGHAM ...
WOLVERHAMPTON
CARDIFF ______
MANCHESTER___
BIRKENHEAD___
SHEFFIELD ___
NEWCASTLE-ON-

TYNE ______
GLASGOW_____
SYDNEY _______

Elverton St., Westminster,S.W.
Tunnel Avenue, East Greenwich,
Saltley Works.	[S.E.

Lower Walsall Street.

East Moors.

Great Marlborough Street.
Bromborough Port.

Celtic Works, Savile Street.

Walker Gate.

Rosehill Works, Polmadie.

N.S.W.

THE SOUTH WALES COALFIELD. PART II.

By Henry K. Jordan, F G.8. (Past President and first-

Gold Medallist of the South Wales Institute of Engineers).

This Paper, which deals with the western part of the Coalfield, has just
been published by the South Wales Institute of Engineers. It consists of
81 pages of printed matter with sections and diagrams. The large drawings
are issued separately and comprise

1.	A Horizontal Section across the anthracite region of Llandybie and

Pant-y ffynnon, and via the Dulais Valley to the sea at Swansea. It
is drawn to a scale of six inches to one mile, is 8 ft. in length, monntad
on linen, and geologically coloured.

2.	Comparative Sections of the Lower Measures in the following areas

(A)	Neath Valley.	(E) Ammanford.

(B)	Swansea Valley.	(F) Loughor Valley.

(C)	Brynamman District. (G) Gwendraeth District.

(D)	Amman Valley.	(H) Gwendraeth District.

These are drawn on one sheet, about 35 by 30 in., mounted on linen, to
a scale of 200 ft. to 1 in.

3.	A Map of Swansea District, on a scale of 6 in. to one mile, showing

the outcrops of the coal seams.

A limited number of the above are for sale, and may be obtained from
The Secretary, The South Wales Institute of Engineers,
CARDIFF.

Price £1 is., Postage Extra.

** The South Wales Coalfield,” Part I., by Mr. H. K. Jordan, published
in 1908, price £2 2s , dealt with the eastern half of the Coalfield, and may lx
obtained from the Secretary.

Indian Mines Act, 1901, with a Digest of

the Act, a reprint of the Act with explanatory notes^an appendix coi
taining forms, a model code of Special Rules, &c., by W. H. Pickerin?
Chief Inspector of Mines in India, and W. Graham, Barrister-at-Law.-
?rice 10s. post free from Colliery Guardian Office. 30 & 31, Furnival-street
Holborn, London, E.O.

T YIH OS.

“Bitromarc” Solution

A highly efficient Bituminous, Anti-

< < Corrosive Black Enamel Paint for Iron
and Steel Structures, Corrugated Iron,. >

>' v’ Chips’ Holds, ^Bunkers, &c. '*..

SOLE PROPRIETORS:

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; Tynos Works, SC0TSW00D-0N-TYNE.

No.v»' 65 Central.-- ,; Tel. Address:'/**Compo,' Scot, wood.”

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Every description either separate or in cases.
SPECIAL 12 in. CARDBOARD PROTRACTOR,
reading to i°, at 2s. Od., postage 6d.
illustrated catalogue on application.

Wil II ARI IN 12 Mathematical Drawing and Surveying
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Established 1851.	Factory—HACKNEY, E.

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ELECTRICAL CABLE MAKERS & ENGINEERS.

REGD. TRADE MARK.

Works: Prescot, Helsby, & Liverpool.

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__________________________

Semet-Solvay Coke Ovens

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SHOWING SOLID CONSTRUCTION.

Strongest in Design.
Separate sets of flues to each oven.
Very low Maintenance Cost.

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“DIRECT” AMMONIA RECOVERY PLANT,
giving increased yield of Sulphate, with less
Labour, and a saving in Steam consumption.

THE COKE OVEN CONSTRUCTION CO. L!

Howard Chambers, 155, Norfolk Street, SHEFFIELD.