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iv.
The Optical Magic Lantern Journal and Photographic Enlarger.
XYGEN Extracted from the Atmosphere by BRLAS' PATENT PROCESS, absolutely free from Chlorine or deleterious matter of any kind.
Supplied at a few hours’ notice compressed in Weldless Steel Cylinders, at 120 atmospheres C1,800lbs.) on the square inch.
XYGEN—40,000 Oubic Feet in stock.
COs BLOW PIPES, for Soldering and Brazing, &c., for Mechanics, Electrical Engineers, Coppersmiths, Plumbers, Glassblowers, &c.
XYGEN for Limelight Illumination, Magic Lanterns, Illuminated Advertising, &c.
XYGEN — SPECIAL TERMS to Theatres and large Consumers. Tanks and bags are dispensed with, and back pressureand mixing of gases rendered impossible, .
Explosions of Retorts and Chemicals are done away with.
The Oxygen is cheaper and.purer than that made from chlorate of potash, and has no corrosive action on metal fittings.
Cea Each cylinder is tested under a pressure of Two Tons (4,480]bs.) on the square inch before being filled. These precautions render the use of compressed gaces quite safe. have been observed when purchasing see that our name is stamped on both cylinder and valve.
A Large Stock of Cylinders, from 25s. to 94s., according to size; Couplings, Keys, Gauges, Regulators, Valves, &c., always on hand.
Agents in all Principal towns.
Price Lists and all information on application to
(HE MANCHESTER OXYGEN COMPANY, Ltd, (Brins'’ Patent),
GREAT MARLBOROUGH &T., OXFORD RD., MANCHESTER. Manufacturers and Compressors of all kinds of Gas.
To ensure that they .
THE GUINEA DETECTIVE CAMERA.
A Thoroughly Effective and Serviceable: Quarter-Plate Camera.
REQUIRES NO FOCUSSING,
| HAS AN ENGLISH ACHROMATIC LENS,,. AND THREE DOUBLE SLIDES.
WALTER GRIFFITHS & CO., LIMITED,
HIGHGATE SQUARE, BIRMINGHAM.
| | | PARTICULARS FREE FROM THE PATENTEKS AND MANUFACTURERS,
X[LHORNTON-JOICKARD
@ SHUTTER
IS THE SIMPLEST AND THE BEST.
“TIME”
Prices or Lens having hood up
2. (Uin., 18/6 | 3 in., 27/2. & Es 2? aole | 8 » 32/8 SBS. wyels | 37/6 BNE 2, 23/6) 42 ,, 42/6 Sa = (24? 257: [5° 47fh. Instantaneous from 11/6 Stereo. ‘‘ Time,” and Instan
aneous, from 26/
THORNTON PICKARD
Manufacturing Co.,
St. Mary’s St., Deansgate Manchester.
CRYSTAL PALACE. FOURTH NATIONAL PHOTOGRAPHIC EXHIBITION
AND OPTICAL LANTERN ENTERTAINMENT.
APRIL 198tuH TO MAY Onn, 1891.
ART DIVISION open to Profersional and Amateur Photographers. The Alcoves and Screens will be placed in the Nave, thus ensuring an equally prominent position for each Exhibitor. A GOLD MEDAL wilb be awarded for the best Alcove, and a SILVER MEDAL for the best complete Screen.
The Classes for Amateurs and Professionals will be kept separate and distinct, and a Special Class will be
devoted to the work of Lady Amateurs. Ladies’ Class.
A SILVER MEDAL will be awarded to the best Picture in the
The GRAND CHALLENGE CUP, for the best Collective Exhibit by a Photographic Club or
Association, will be again competed for. A CHAMPION be addressed to—
4
CLASS COMPETITION will be inaugurated. All Correspondence and Enquiries; to»
THE MANAGER, CRYSTAL PALACE, S.E.