October 8, 1915.

THE COLLIERY GUARDIAN.

749

THESE HOISTS

WIND ANY
HEIGHT

As the chain merely passes through them instead of accumu-
lating on the barrel. They also have a self-acting brake.
------ ASK FOR OUR LIST No. 28. -
Ryland Street Works, Y U N G S J BIRMINGHAM.

'RAISE;

LOWER

'raise^H

^TOP/IS

•*** \ v —
9k	Z4

Ik	5 J

WINDING
SIGNALS
“ NON-CUMULATIVE.”

DAVIS’S Self-Contained

SOLENOID BELL

with DIAL INDICATOR.

Patent No. 7638, and Patents Nos. 7241 and
17607 applied for.

Simple, Efficient, Inexpensive.

SEND FOR LIST 41 V.

JOHN DAVIS & SON
(DERBY) LTD.,
All Sainis Works, DERBY;
and 17 Victoria St., Westminster, London, S.W.
Phone—240 Derby. Telegrams—** Davis, Derby.”

Steel Underframe

Railway Car-
riages, Tram ars,
and Wagons of
every description
for Hire and Sale
by Immediate or
Deferred Pay-
ments. Ironwork,
Wheels and Axles.

WAGONS.

Also Wagons with Oa’c Underframes

Makers of HYDRAULIC PRESSED BOSS
and other WHEELS and AXLES.

PRESSED S'T'EZEZU BOGIES.

Wagons for
Hire, capable of
carrying Six,
Eight and Ten
Tons, part of
which are con-
structed specially
for Shipping pur-
poses. Wagons
in Working Order
maintained by
Contract.

SECOND-HAND BALLAST WAGONS FIT FOR MAIN LINE TRAFFIC.

Sole Manufacturers of Dean & Churchward’s “ EITHERSIDE
BRAKE,” and Marillier’s Patent “ INSTANTER COUPLING.”

The Birmingham Railway
Carriage & Wagon Co. Ltd.,
WORKS : SMETHWICK, BIRMINGHAM.

the Prussian Commission on Falls of Stone and Coal.

PRICE -	- ONE SHILLING.

The Colliery Guardian Co. Ltd., 30 a 31, Furnival Street, Holborn, London, E.C.

THE SOUTH WALES COALFIELD. PART II.

By Henry K. Jordan, F G.S. (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 ol 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, mounted
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.

M 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 be
obtained from the Secretary.

John Russell & Co. Ltd.,

Alma Tube Works, WALSALL.

( TUBES FITTINGS ) 1

For Gas, Steam, Water, &c.

WELDLESS STEEL TUBES for EHGINEERS, Ac. ,

ROBURITE No. 3.

HELD BEST RECORD for SAFETY for gg YEARS.

ROBURITE I* 4

Is now BEST & SAFEST

on tlie New Permitted List.

NEGRO POWDER No. 2 & DREADNOUGHT POWDER

Also on New Permitted List.

ROBURITE and AMMONAL LTD., GATHURST, near WIGAN.

LONDON OFFICE:—103, CANNON STREET, LONDON, E.C.

Telegraphic Addresses: “ Roburite, Cannon, London.”

“Roburite, Gathurst.

Telephone Nos.: 141 Bank. 9 Upholland.