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MATIC PLATES,
EDWARDS ISOCHRO
THE OPTICAL
MAGIC LANTERN
— JOURNAL ——
ANDO
PHOTOGRAPHIC ENLARGER.
A Magazine of Popular Science for the Lecture-room and
Edited by J. HAY TAYLOR. the Domestic Circle. Peel Vol. 5.—No. 62. JULY 1, 1894. Price 1d., Post-free 2d.
J. Tratty Taycor, in British Journal of Photography, says: ‘‘ Messrs. Perken, Son, and Rayment claim to have produced a triple-wick oil lamp, in which the luminosity is equal toONE HUNDRED CANDLE POWER—while the light is very pure, and the heat less than usual. We have been present at trials made with it, and find their allegations as to PURITY and INTENSITY OF FLAME are maintained."
T. Boras, in Photographic Work, saya:—‘‘ The Optimus 100 Candle Power Oil Lamp ~the light certainly surprised us. . . The brightness—and above all the whiteness—of the disc recalling a lime light. . . .”
Amateur Photographer, Nov 10, 1893.—‘‘ Messrs. Perken, Son, and Rayment, of 99, Hatton Garden, have just introduced a great improvement in oil-lamps, which will be warmly welcomed by all who use this form of illuminant. From the diagram it will be seen that central as well as side air shafts are provided, and with »*.. the greater supply of air is combined greater illumination and greater freedom from smell. We have had an opportunity of severely testing this lamp against some of . of the best ordinary forms, and the increase in illumination is at least three times. : aensl oe The whiteness of the light is so much increased that this should be -:useful for enlarging.”
By means of air shafts enormous increase of brilliancy is secured (which has
been computed to equal three times the candle power of the refulgent lamps “ Optimus” 1893-4 Patent Lamp hitherto sold with magic lanterns—zide Report of Meeting, Bristol Photographic for Projection Lantern. Association, Feb. 24, 1893). 3-wicks. 2-in. wide, with chimney 25/each.
PERKEN, SON & RAYMENT, ‘cr. LONDON. ‘OPTIMUS.
BLAIR'S HAND CAMERAS
For 1894
ger Show the Greatest Step Forward in Improvement in Cameras for many years. Ry
SEND FOR LIST OF DEALERS ALREADY CARRYING THEM IN STOCK TO
Taeexesiiiee’ or THE EUROPEAN BLAIR CAMERA CO., Ltd,
9, SOUTHAMPTON STREET, HIGH HOLBORN, LONDON, W.C.
EDWARDS LANTERN PLATES.