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xiv. The Optical Magic Lantern Journal and Photographic Enlarger.
PATENTS and
TRADEMARKS.
W.P. THOMPSON & CO,,
Telegraphic Address: DISCOVERY, LONDON.
322, HIGH HOLBORN, LONDON, W.C.
Telephone No. 6823, HOLBORN
Also at 6, LORD ST., LIVERPOOL; 6, BANK ST., MANCHESTER; LOWER TEMPLE ST., BIRMINGHAM.
Patents secured, maintained, defended and worked in all countries.
Oppositions conducted, searches made,
opinions on infringements given, and expert evidence arranged. Trademarks, Designs and Copyrights secured and defended in all countries granting protection.
Handbook of Patent Law.
Tenth dition.
British Portion, 6d. All countries, 2s. 6d.
WW. WATSON & SONS, Diicians t...
b.IM. Government
313, High Holborn, London. ACTUAL MANUFACTURERS OF THE HIGHEST CLASS LANTERNS
Lantern Slide Publishers.
Write for New Season’s List.
HUNDREDS OF NEW SLIDES.
Artistic Colouring Undertaken.
THE LARGEST STOCK IN LONDON Skilled Operators Sent Any Distance.
LECTURES ARRANGED AND PUBLISHED.
W. WATSON & SONS,
Established 1837. BEARD’S
ECLIPSE CARRIER gx=
10/6 It produces an cffect similar to dissolving. The Slides are inserted and withdrawn by a single movement.
GAS REGULATOR
mM Ts the only reliable Regulator giving perfect results with all kinds of jets.
3O/-.
Price
HAND-FEED
ARG LAMPS.
All mechanical movements for centering arc. These Lamps are used by the Polytechnic, Queen’s Hall, Royal om Photographic Society, etc. Assender’s “Trilby"’ and Marriott’s Limes Stocked,
Wholesale and Retail. Re , Lantern Expert and
R. R. BEARD, ‘“teniactire,
10, Trafalgar Rd., Old Kent Rd., LONDON, S.E.
i pent | 313, HIGH HOLBORN,
LONDON.
GWYER’S = rower
LIMELIGHT JETS
Used in eoniuneton: with a Pendant Saturator,
most perfect lig ht for optical projection obtainable.
FREE TRIAL ALLOWED.
| What an experienced Lanternist says :—
“TL yesterday sold my old meee Saturator so should like anew One in its place. The new Jet works very well indeed. I used it on Wednesday at a private trial in the Borough Hall here. It iuminateda picture at SO feet distance with 15 inch lens. Ib worked quite easily and gaye nearly as much light as the 10 ampere direct current are lamp, and the are larnp was notin the same street for evenness of light throughout.”
J.S. WILLWway & SONS, ST, AUGUSTINE’S PARADE, BRISTOL.