The Optical Magic Lantern Journal (January 1890)

= The Optical Magic Lantern Journal and Photographio Enlarger, 63 > Messrs. G. W. WILSON AND Co.,:;of Aberdeen, have sent us a book of the reading which accompanies their set of twelve lantern slides of the Forth Bridge. It describes in an interesting and concise manner, in fifteen pages, the work and workmanship of this famous bridge. WE have received from the Anti-dark Room Photographic Co., New York, one of their apparatus employed in developing plates in daylight. This outfit consists of an oblong frame fitted with a trap-door on the outside, and completely enveloping the framework is a rubber hood with contracting apperture, for the reception and inclosure of the hands. After the plate has been laced in the developer, } and the rubber hood removed, then the changer should be removed and the lid of the developing table closed. After a few seconds the lid may be opened from time to time to examine the development, and when it has progressed sufficiently to call for an examination ofits density, the upper and lower lids of the developing table areopened, and the light reflected through the plate, as shown in the cut, affords full opportunity to judge density. Applications for Patents, 1889. No. 17318.—Nov. 1, F. Miall, “ Photographic camera.” _ No. 17378.—Nov. 2, A. W. Scott, “ Saturator for limelight purposes.” _ No, 18453.—Nov. 19, H. Stainforth, “ Holder for adjusting lime-light jets in optical lanterns.” No. 18523.—Nov. 19, J. T. Leighton, “ Apparatus for exhibiting photographs.” No. 18583.—Nov. 20, A. Hughes, “ Optical lantern.” No. 18907.—Nov. 25, E. Galopin, ‘‘Controlling supply of gases for dissolving view lanterns.” No. 19319.—Dec. 2, A. Pearson, “Lantern slide camera.” No. 19737.—Dec. 9, R. Brownlie, ‘‘ Advertising by photography.” No. 19976.—Dec. 12, G. Isaac, ‘‘ Frame for lantern slides.” 20: Correspondence. COMIC SLIDE COLOURING. [Lo the Editor. | S1r,—If the colours are as purchased from the artist colourman, mix them with a little megilp, and apply them with a firm brush, selecting the colours to suit the objects. The question is too indefinite to admit of a reply in more detail. PAINT. A TRADE UNION OF PHOTOGRAPHERS. [fo the Editor.) S1r,—May I ask you to insert this letter in your excellent little periodical ? I wish to inform your readers that a union of workers in every branch of the photographic profession has been proposed, and is now being brought before the notice of the readers of the trade publications. The method of forming it (or rather @ method advanced for discussion) has been described at some length in an article on page 560 of this year’s British Journal almanack. Information will readily be given by me to any applicant who encloses stamp for reply.—Yours, &c., Maidstone, Dec. 19, 1889. ARTHUR J. FIELD. PHOTO-ETCHING. [To the Editor. ] S1r,—Under the heading, “ Flashes on Lantern Topics,” in the Magic Lantern Journal for November 15, 1889, I have just come upon a notice of the application for a patent for the use of “A glass-plate or other transparent substance, coated with a nonactinic film, and used as a negative for photographic and other purposes.” Now, if I am correct in my interpretation of this, it exactly describes a process which I myself devised. and have worked more or less for several years, that is to say, 1 have coated glass plates with a special opaque etching ground of my own composition, and have etched the plates so prepared, and used them as negatives to produce both lantern slides and paper prints, to which latter I have given the name of photo-etchings. It is possible I am misconstruing the specification you quote. If, however, I am not, and you think the matter of sufficient interest, I shall have pleasure in forwarding for your inspection one or two negatives thus made, and which have been in use several years. —I am, yours truly, FRANK R. HINKINS. Royston, Cambs. [We shall be glad to see the specimen ; and if our correspondent does not consider it a trade secret,. perhaps he will publish the formula for the composition of his varnish_— ED.] DARK ROOMS. [0 the Editor. ] Srr,—Referring to the description of dark rooms, which appeared in your Journal, mine is made in a very simple manner. A _wash-stand basin with plug, and pail underneath; a frame a little higher than the top of my head, fastened to sides of stand ; and some fabric (red and yellow sewn together) which I let down around me to the floor. In the day-time I can. set it near the window, and at night the chandelier suffices aS far as illumination is concerned.—Yours,&c., Aberdeen. j. P.M. 10: FALLOWFIELD’S Photographic Remembrancer, Traveller, and Photographie Tit Bits has, with the December quarter, entered on a new departure. It has been enlarged, and otherwise improved, and contains particulars of the ‘* Facile” hand camera, a list of the novelties kept in stock by this wellknown firm, together with various photographic formule, and the odd spaces contain humorous paragraphs pertaining. to photography.