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The Optical Magic Lantern Journal and Photographic Enlarger.
IF 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 produce a certain sized dise with alens of
given focus ;
SEND 23d. FOR A
~ Ready Reference Table
(On Cardboard) By J.
HAY TAYLOR.
FASTEN IT ON THE LID OF LANTERN BOX.
MAGIC LANTERN JOURNAL COMPANY, Ltd., 9, Carthusian Street, London, E.C.
OPTICAL LANTERNS & SLIDES
OF THE HIGHEST QUALITY ONLY.
NEWTON & CO.’S csi: ‘“ DEMONSTRATORS ” LANTERN,
FOR OIL OR LIMELIGHT. |
With Prisms for Erecting, and for Vertical Projection.
Price £9 9s
3, FLEET STAEET, LONDON.
The most simple and efficient Single Lantern yet constructed fo rgeneral scientific work, NEW CATALOGUE of Lanterns, Pror jection Apparatus
i
fs ines
Bk
Nem
and Slides, Post Free, 6 Stamps.
New Detailed Illustrated Catalogue of Lanterns and Slides, 6 stamps. NEWTON & Co. manufacture Patent Newtonian 4-wick Oil Lamps. Major Holden’s Arc Lamp. Newton’s Patent Hand I'ccd Lamp. Newton’s Patent ‘‘ Demonstrator's” jLantern. Patent Adjusting Tray for Jets, Askew’s Patcnt Combination Lantern Box and Stand. Wright's Lintern Microscope. Wright’s Oxy-Hydrogen Jets with “ Pringle-Cut off.” ‘The '‘ Miniature’ Lantern. The Scientist's bi-Unial. Traill Taylor's Triple Condenser.
STEREOSCOPIC PICTURES
Shown with the Lantern by the
“NEWTONIAN” SYSTEM, (Patent applied for).
THE NEW PHOTOGRAPHY. RAY “FOCUS” TUBE, 35s.
Therc has been great difficulty in obtaining suitable Vacuum Tubes for producing the Réntgen XN Rays for photographic purposes, chiefly because the best conditions were not known. A long series of careful experiments has been made, to ascertain the conditions of success, at King’s College, London, which has resulted in a tube of different shape, size,and degree of vacuum to those previously employed.
One important result of this is that far less current can be employed, and that a simp’c battery and coil may be used without Tesla apparatus.
Complete Set of Apparatus for Photographing with the X Rays. comprising Battery, Coil, Tube, &c., £18 18s.
Complete Set, as above, but with larger Coil and more Battery Power, 7 * Fe following Slides have now been added to those already published :
(7) Foot, naked, showing bones spread as in walking.
(8) Foot, in sock, showing bones cramped together by the sock.
(9) Hand of a Lady, by Mr. S. Rowland. ; :
(10) Hand of a Lady, showing all the bones, including the thumb and wrist. This is the Gnest Hand yet produced.
(11) Fish, Sole, showing bones, &c.
(12) Fish, Plaice, showing bones. &c. ’ a
(13) Cigars in Aluminium Case, and various subjects showing different degrees of transparency.
(13) Human Wrist and Arm Bones.
(15) Human Hand, showing deformity of finger.
(16) Human Hand, showing damaged finger. &c., &c., &c.
Price 1s. 6d. each. List on Application.
NEWTON & CO.,
3, FLEET STREET, LONDON, E.C.
Printed and Published by the Proprietors, TH® Micic LanTERN JouRNAL Courany, L1p., 9, Carthusian Street, London, E,0.