The Optical Magic Lantern Journal (August 1889)

THE OPTICAL MAGIG LANTERN JOURNAL —— PHOTOGRAPHIC ENLARGER. Vol. 1.—No. 8. [seanenace fan. AUGUST 15, 1889. Price One Penny. CONTENTS. PaGF. Notésviie ais. Geis ies A case LT. The Magic Lantern: Its Contruction, Illumination, Optics, and Uses (chap. 3)... ... 1S Discs and their Relation to the Lenses acs sos ore eae 92 Curious Experiment with Light | PAGE. 23 Editorial Table... ... 23 The Screen... ... ss. se es 20 | Applications for Patents, 1889 23 Anecdote of David Livingstone, | Correspondence... is3 ae 28 the African Explorer ... ... 20 , Selections ... ... ae 24 F lashes on Lantern Topics ... 21 | Notes and Queries ... wae O48 Contents or No. 2. Notes—Lantern Slide Statuary—Tecktoquinone—How to Darken the Windows for Daylight Exhibition—Correct Form of Reflector—The Magic Lantern: Its Construction, Llumination, Optics, and Uses— Lanterns and Accessories—Photography as Applied to the Lantern — Novel Dissolving Effect — Editorial Table — Applications for Patents—Correspondence—Selections— Notes and Queries. Notices. THE Optical Magic Lantern Journal and Photographic Enlarger is issued on the 15th of every month, price One Penny, and may be obtained from all Newsvendors. Railway News Stalls, Photographic Dealers, or from the Publishers, at the following rates, post free :— ‘ Continental. United States. 12months ... 1/6 ... 2/ 60 cents. 6 ye 19... Th wee vee 30 Singlecopies... /f} ... [2 «. w. 6 4, Advertisements (Scale of Charges), displayed :— 4s d Front page... sey we Fee 4 0 0 i 49 tele jie «(eighth) ... 15 9 Back ,, or facing matter (whole) ... 3 [0 0 n ” ” ” chalf) 2 0 0 ” ” ” » (quarter)... I 2 6 ” ” ” » (eighth) ... Ir 3 Ordinary page (whole) ... 3 GQ 0 ‘ 8 Chalf) 115 0 ” ” (quarter)... I O 0 a 4 ais --» (eighth) ... Io oa . ~ per r inch in column ... 6 0 Special quotations for a series. Exchange Column, General Wants and Sales, &c.— 20 words, 6d.; and for every 3 additional words, 1d. Advertisements must reach the office not later than the 12th of each month. All cheques and postal orders to be made payable to Taylor Brothers. Editorial communications must be addressed, The Editor ; advertisements and business communications to Taylor Brothers, care of the Publishers, Dorset Works, Salisbury Square, Fleet Street, London, E.C. Notes. Mucu has been said and written of late about the fiftieth anniversary of photographic art-science, but it has been left to the proprietor of a dining room in Blackfriars Road to exhibit a photographic print of a few centuries (?) old. He has in his window two photographs, one showing the premises in 168s and the other in 1885, and if we mistake not, the same personage appears in both. Perhaps he comes of a long-lived race. * * * THE above is suggestive of a certain firm who publish an illustrated Bible with authentic portraits of the old patriarchs and men of note of a former epoch taken from life. : 2 From the South ot Mexico we learn that the lantern is now being greatly employed as an educational power. Geography is taught in a somewhat: novel manner. A smoked piece of glass is inserted as a slide, and, by means of a pointer moved from the outside, sharp bright lines are traced upon it. One who was present describes the scholastic scene as most sensational. Every eye was intently fixed upon the screen, watching with avidity the creation of foreign countries by the pointer, which was actuated by a pantagraph-like apparatus. Scenes thus impressed are very rarely forgotten. IT is asserted that 350 tons of sulphur are thrown into the air every day in London during winter. This represents upwards of 1,000 tons of monohydrated sulphuric acid daily acting in a deleterious manner. 2 * * M. C. REINHARDT, speaking of German methylated spirits, says he has found that the spirit of commerce, introduced since the alcohol tax was levied in Germany, has a most destructive action on copper, zinc, brass, &c., so that the brass lamps used in laboratories have required frequent repairs. Even platinum vessels placed over it are acted upon to such an extent that they soon become useless.