The Optical Magic Lantern Journal (February 1891)

82 The Optical Magic Lantern Journal and Photographic Enlarger. “A POPULAR evening for the people" is held every Friday, at Lockfield’s Mission, Rodney| road, S.E. The Rev. J. Mcakin, having | obtaincd permission from several illustrated Papers, has the pictures reproduced as lantern shdes, and thus illustrates interesting lectures, termed, The News of the Day. Admission free. Mr. A. E. Wade, 177, Walworth-road, makes the slides for each entertainment. bal oa * We learn that an Edinburgh gentleman who had ! recently engaged to give an exhibition, failed to get hisoxygencylinderfromGlasgow, owingtothe disorganization of traffic, and had at the last | moment to fall back on his old oxy-generator and gasometer, which was a rather clumsy substitute. * » * Mr. T. Beery, of Dundce, writing on the subject of oils for lanterns, says : ‘‘ After experimenting carcfully with various kinds of petroleum and paratfin oils, common and refined, I have found the best light, with freedom from any smell, is obtained by using the Luxor oil. Being filtered and perfumed, it is also admirably adapted for use in microscopic and table lamps * * mR No. 48, Waterloo-road seems too small for Mr. Walter Tyler to conduct his increasing business in, so he has obtained a lease of No. so also, andintends making the two shops into one. ” 2 2 THE name of the North Middlesex Photographie Club has been changed to the North Middlesex Photographic Society. » * * LiTtLe by little the lantern is becoming more popular for the illustration of Sunday lectures. Mr. Herbert Ward (Stanley rear guard), for the National Sunday League, at Shoreditch Town | Hall, recently gave an interesting lecture (illustrated) entitled, “The Congo Cannibals of Central Africa.” Dr. Aubrey lately gave what | was advertiscd as ‘a grand oxy-hydrogen lime| light display and descriptive account of Irish Life and Shadowing," at the Hackney Reform Club. Lectures of this nature are largely attended | on Sunday evenings. Perhaps, eventually, all | churches will be provided with a huge white | space, in place of a stained glass window, and a snug little gallery opposite for the lantern and operator, whilst the minister will, with the aid ot an optical pointer, draw attention to the various parts of the pictures or diagrams about which he is discoursing. » bal * For the purpose of taking in hand the hospital | scheme for giving lantern entertainments to the: patients, a working committee of three has been | 1 1 { formed, viz., Messrs. A. R. Dresser, Springfield, Bexley Heath; Chas. E. Rendle, Alma-road, Canonbury ; and J. Hay Taylor. If those friends who kindly promised to donate slides, apparatus, or cash (however small) will forward same to J. Hay Taylor (Lantern Journa), Dorset Works, Salisbury-square, London, E.C., these entertainments can be commenced at once. o—— Plain Photographs Projected in Golours. TurouGH the kindness of the inventor, Mr. Albert Scott, of Weston-super-Mare, we have had an opportunity of examining and trying his new lantern, which is termed the Verak. The gencral arrangement displays great ingenuity, and the results as seen on the screen are very striking. In order to see transparencies in colour, negatives must be taken four on a plate (isochromatic), each lens being provided with a coloured screen ; these colours are green, blue, red, and violet. To make the exposures of the same duration the lenses arc provided with stops of different ‘sizes. Transparencies are made from the negaj tives, which by preference should be somewhat dense to produce brilliant colours. The four transparencies contained on the one plate present different local gradations of intensity according to the colours of the object photo graphed. The cut shows the order in which the lenses, slides and coloured screens are placed in the lantern: 4, the light; &, main condenser; C, screen, containing the four colours through which the negative was exposed ; D, set of four auxiliary condensers ; 4, the Verak slide; /, registering lens; G, four projecting lenses; A, lever for focusing ; /, sliding tube containing the four