The Optical Magic Lantern Journal (November 1889)

48 The Optical Magio Lantern Journal and Photographic Enlarger. Lantern Carrier. Mr. J. W. RAMSDEN, of Leeds, writes: ‘‘ Respecting my lantern carrier, I don’t in the least dispute Mr. C. Ferrero’s assertion ; probably similar ideas have occurred to dozens of others. Certainly the want of the carrier existed. My carrier was issued to the dealers for last winter’s season, and was reviewed in the British Juurnal of Photography. 1 find on reference to my joiner’s bill that the carrier was first made for me in March, 1888.” Camera-Club Notices. Monday, Nov. 18th, § to 9.30 p.m.—Mr. Roberts will be prepared with the lantern if any member or members send him advice to the Club that they would like to try slides. Thursday, Nov. 21st, 8 p.1.—Mr. Alfred Maskell, ‘‘ The Progress of Hydroquinone.” Thursday, Nov. 28th, § p.m. —Lantern evening. Wednesday, Dec. 4th, 8.30 p.ut.—Soirée at the Galleries of weno Society of British Artists, 63, Suffolk-street, Pall Thursday, Dec. 5th, 8 ~.m.—Mr. A. Horsley Hinton, “ The Standard of Excellence in our Art.” Notes and Queries, S. A. W. (Leeds), B. H. M. (Swansea).—Answered by post. Camberwell.—If you subject the argand lamp to a good boiling with plenty of soda in the water, it will give a better light ; it is necessary that it be kept clean ; a gas argand will not give such a good light as the oil lamp. Chas, L. Barclay writes :—‘‘ Can you tell me where I can ‘procure a lantern transparency of ‘ The fountain of Trevi,’ in Rome?" A, Burns writes : — Can you advise me of a good form of glue or paste for using when binding transparencies? I have tried gum, but the paper binding comes off after a time.” . Anawer.—Paste is the best mountant. A good receipt is as follows :—Place half a quartern of flour in a saucepan, with a little water, stir well in order to break all the lumps, after which add two quarts of water, and boil until itisthick. Care must be taken that it be stirred often, to prevent it from ‘lumping and burning. The addition of an ounce of powdered alum will improve its keeping qualities. J.S.R,—1. Ten cubic feet of gas should be sufficient for (a blow-throught jet) two hours’ duration. 2, We shall be very pleased to see it. 3. Later on. Facile.—Messrs. Fallowfeld now supply this camera fitted with a finder ; if you send it to them you can doubtless have one fitted. Would-be Exhibitor asks :—‘‘t. Please tell me the best firm ‘from whom to purchase a complete dissolving view outfit. As I know very little about the instrument, I do not want to buy a second-hand one. 2. Where can I geta few practical lessons in its management ?”” Reply.—We cannot recommend any one firm in preference to another, but if you consult our advertising pages, you will find several from whom you can obtain what you require, and who will be pleased at the same time to give you the desired information. One ina Fiz writes :—‘‘ Some weeks ago I made some very fine negatives with a detective (at least they made pleasing lantern slides), and on one of our brightest days lately I made .some more exposures under similar conditions, and used the plates of the same make, but cannot get such good results as the previous lot. I send you per post a negative and a transparency of the last lot tried, and also a silver print from one of the negatives taken a few weeks ago. Please say in your ‘Notes and Queries’ columns where the fault lies," Answer. —The paper print is very good, but the negative received is decidedly under exposed. When making exposures you must allow for the light, the actinic force of which is not now so strong as it was a month or so ago. Masks (Oldham).—A Robinson trimmer will answer your purpose for cutting out circular masks ; it consists in a sheet of metal having a circle of the desired size cut out of it; this is laid upon the paper, from which with one sweep of the cutter a circle may be cut out. The cutter is a small sharp steel wheel mounted at the end of a handle. Subscriber.—The suggestions you make about a support to the fronts of a lantern are not practicable. A better means has been adopted by Mr. J. H. Steward, of 406, Strand. Condenser.—See article in our number for July 15. Wilfred Brentrood.—The “ Beacon” is published in America. The address, Tribune Buildings, Chicago, will find them. : Trencus writes :—“1t. May I have the address of Mr. Geo. Smith, the writer of the articles on lanterns and accessories ? 2. Is the cat's-eye dissolver for the single lantern protected by registration or patent? 3. What is approximately the cost of five years’ protection for a mechanical contrivance?” Reply.—t. 26, Colebrook-row, Islington, London, N. 2. If you mean the Iris diaphragm, it is not patented. 3. Provisional patents hold good for nine months, and will cost one pound ; four years’ protection will cost four pounds, provided you take out your own patent. Received. —Particulars referring to the lantern meetings of the Manchester Amateur Photographic Society. R. H. C.—Thanks for list sent. C. E. G.—We replied by post. Amateur (Louth) asks :—“ 1. Will a 4ft. 2in. wick givea better light than a 4ft. 1} in. wick, both made W shape? Is this considered the best style of oil lamp? 2. Where can I get a three lens condenser, and must the lantern be reconstructed to take the third lens further from the light?” Answer.—1. Yes, the wider the wicks, the greater the illumination given. 2. Mr. W. C. Hughes, Kingsland, we believe makes triple condensers. The lamp may have to be withdrawn from the condensers, but no other alteration will be necessary. N. Z. writes :—‘‘How are compressed gas cylinders filled ? Can the operation be done non-professionally, say by hand hydraulic pump or otherwise ?” Reply. —Certainly they can. but the pump for this purpose would be expensive, unless our correspondent is an engineer and can make it for himself. The pressure required is enormous. : Rev. F. Hardwick.—Thanks, number. H. M. Hastings.—The experiment, which is very pretty, is inserted in the present number. Many thanks for it. Amateur (Derby).—The chimney for the lamp you describe can be obtained from Mr. W. C. Hughes, of Kingsland. Mason (Dublin). —Kept out for want of space. R. W.—We should think from £5 to £6 complete if 2oft. square. it will do for the next —+> + —_ THE following recreative lectures have been arranged by Dr. Fleming, and will be delivered at Cleveland and Wardour Halls in connection with the West London Mission. Cleveland Hall: Thursday, Nov. 21, “Our Teeth, How they Come,” Dr. Geo. Cunningham ; Thurs, day, Nov. 28, ‘‘Our Teeth, Why they Go,” Pr. GeoCunningham. Wardour Hall: Tuesday, Nov. 19 “Niagara,” Dr. Fleming; Tuesday, Nov. 26, “ Oliver Cromwell,” Mr. Moulton. Each lecture is illustrated with lantern slides.