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WITH INDEX SUPPLEMENT.
THE OPTICAL
MAGIC LANTERN
—— JOURNAL
AND
PHOTOGRAPHIC ENLARGER.
A Magazine of Popular Science for the Lecture-voom and the Domestic Circle.
Vol. L—No. 12. [setioscss tan. MAY 1, 1890. Price One Penny.
PERKEN, SON & RAYMENT, °° “*ICRSSNPOE™ “ OPTIMUS.”
_. Each Magic Lantern is efficient for exhibitions, The Lens gives crisp definition, being a superior Achromatic Photographic Combination (large diameter back lens), with rack and pinion. It is fitted to a telescopic lengthening tube, so gaining increased focal accommodation. The Condenser is composed of two plano-convex lenses of 4 inches diameter. The refulgent lamp has 3 wicks, (or 4 wicks 2s. extra,) yielding a brilliantly illuminated picture.--Each is complete in box.
Mahogany outside Body, Japanned Metal Stages and
Japanned Metal Russian Iron Body,
Brass Sliding Tubes,
Perforated Russian
Mahogany outside Body, Iron Body,
2 Panelled Door, Brass
—— * Brass Sliding Tubes, Stages, Sliding Tubes 30s. Sliding Tubes, 423. 458 50s. 82s. ’ For ’
‘OPTIMUS’ BI-UNIAL LANTERN. ,,,.fr ‘OPTIMUS’ TRIPLE LANTERN. Panelled Mahogany Body, and moulded foot. picked out with : The Top Lantern may be used separately with Oil Lamp.
black, Japanned stages and tubes, Achroniatic PhotoPanelled Mahogany Body, Moulded foot picked out with
graphic Front Lens, compound condensers... wo. £512 0 black, Brass Stages and Tubes, Achromatic Front Lens, Ditto ditto with brass stages and sliding tubes 8 8 O Sek cass Saad wey aaee
Compound Condensers ...
. » £1410 0
THE BRITANNIA WORKS CO.,
‘ ILFORD, LONDON, E. SOLE MANUFACTURERS OF THE
“ILFORD” PLATES,
Which have the Largest Sale of any Plates in the World.
For Winter Work use only
ILFORD BROMIDE PAPERS, for enlargements or contact printing. Rapid or Slow, rough orsmooth. Give finest detail, and best engraving black Toues. : ;
ILFORD ALPHA PAPER, to replace albumenized paper. Prints by gaslight. Any coleur from black to red. Unequalled brilliancy.
ILFORD “ALPHA” LANTERN PLATES, the most successful ever introducel. A perfect plate.