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xxii. The Optical Magic Lantern Journal and Photographic Enlarger. rp . THE LATEST NOVELTY OUT IS
MENW “1 EGTURER” CANDLE LAM
FOR LANTERN READINGS.
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The very best Lamp yet introduced for Lantern Entertainments.
Gives a GOOD STEADY LIGHT DIRECT on to the Lecturer’s Paper.
NO FEAR OF FIRE from Benzoline or other Oil.
NO POSSIBILITY OF SPOILING LECTURERS’ SHEETS when Travelling. LIGHT EFFECTUALLY Screened from the Room.
NO TRIMMING REQUIRED. | READY FOR USE IN AN INSTANT.
PRICE 15s. Complete. Ofall Photographic and Optical Lantern Dealers.
If cannot obtain, write to the Manufacturers,
E~ a BENHAM & FROUD, LD., CHANZOS STREET, LONDON, W.C.
Proprietors of the well-known “ Perfection’ and ‘‘ Holiday" Lamps for Amateur Photographers.
PHILIP'S NEW TECHNICAL LANTERN.
With Lamp and Chimney for use with Mineral Oil, or with Cowl and Superior Safety Jet for. Limelight. PRICE £4 4s.
SPECIAL FEATURES.—This Lantern is fitted with Rice’s “ Serew-Grip” for Slide-Carrier (Patent applied for), which does away with the unsatisfactory pressure springs, and insures the Carrier (of any thickness) being held absolutely rigid.
The Lenses usually fitted are of 6 in. focus, but any focus can be supplied to suit special requirements.
GEORGE PHILIP & SON, 32, FLEET STREET, LONDON, E.C.
Agents by Special Appointment for the supply of Lanterns and Apparatus to the Teachers’ Guild of Great Britain and Ireland.
SCos kr zs
PATENT WARM AIR SATURATOR.
For Ether or Benzoline, Prices 36/and 50/Special jets, 800 candle power, with flame-proof chambers and adapted nipples, for use with Saturators 3Q/each. These jets also give splendid results with coal-gas. ‘
Travelling.
rth Road,
177
A. W. SCOTT, 401, Cowbridge Road, Cardiff. T. J. DOGGETT, SCOTT, 401, Cowbridg aan Manufacturing Tin-Plate Worker to the Optical COLOURING, &c.
Lantern and Photographic Trades, Slides artistically coloured from 46 doz. Slides carefully prepared
from Negatives, Photos, Engravings. Plates and Films Developed. 4, CHURCH LANE, UPPER ST., LONDON, N. Retouching, Printing, Enlarging, and Finishing in Oils or Water Lanterns in Japanned Tin-Plate or Mahogany—All accessories for Cotour. Lantern Trade kept in stock. T. T. WING, CHATTERIS, CAMBS.
Ir YOU WISH TO KNOW
1.—What focus of lens is required to produce a certain size of disc, at a given distance; .
2.—What size of disc can be produced by a lens of given focus at a stated distance ;
3.— What distance a lantern must be from the screen to producea certain sized dise with a lens of given focus; .
SEND s2:id. FOR A
RHADY REFHERENCH TABLE
(On Cardboard) By J. HAY TAYLOR. FASTEN IT ON THE LID OF LANTERN BOX.
TAYLOR BROS., 56, Chancery Lane, London, W.C.