The Optical Magic Lantern Journal (April 1896)

74 The Optical Magic Lantern Journal and Photographic Enlarger. doubt in @ year or so’s time it would be well to start it again. I will take this opportunity of thanking you, sir, for the interest you have taken in the matter, and I should also like to tender my grateful thanks to those correspondents (for the most part strangers to me) whose friendly letters and courteous suggestions have rendered the work connected with the Exchange the reverse of tedious. I am, «c., 2, Thames Place, A. M. HIDDON. Putney. ANCIENT WATER AND FLOUR MILLS. To the Iditor. Sirn,—I am desirous of obtaining information as to photographs of any of the ancient water and wind flour mills existing in various parts of the country. Most of these are sufficiently picturesque to have gained the attention of many a tourist wandc:ing with his camera through the country, and also many @ professional photographer. Will you allow me to enquire from your readers, as to the whereabouts of any of these mills, as I am avxious to obtuin as many photographs of them as possible. These I purpose using (asillustrations of a style of mill which has now passed away) in my ‘ History of British Corn Mills,” which is almost ready for press. Any information direct, or published in your columns, will oblige. Yours truly, Liverpool. R. BENNETT. ——-:0:—— Notes and Queries. J. T. Wells.—Letter with the address was sent on to you. Gasoline may be obtained from Carlus Capel and Lennard, White Post Lane, Hackney Wick, London, E. R. H. Ramsay.—Thanks for photograph. H. Ashton.—Several articles specially for teachers will be found in our last two volumes. H. S.—Canada Balsam can be thinned either with turpentine or by heating. We cannot say how much of the former to add, as we have no means of knowing how thick your supply is. Make it so that it can be poured. J. D.—Screw asunder all the parts of the jct, and clean each separately, using & tobacco pipe brush for the inside of tubing. Clean the nipple by means of & pointed piece of hard wood, after the style that watch makers clean pivot holes on watch plates. W. Chefins.—Have you tried an extremely sme] orifice, this will do away with the smoke. If one burner ie not enough place two close together, one behind the other. No air need thue be used. If you obtain much more brilliancy from your method, then it may be well to consider patenting the attachment, but not otherwise. Rev. Geo. Grove-—We believe Mr. Chadwick, of Manchester, can supply a gasometer of the style you write about. H. Platt writes:—As a wet collodion worker I wes interested in your article in March iesue on “ Which is the Beat Process for Making Lantern Slides ?’’ wherein I note a suggestion for obtaining a warm colour by developing with weak iron developer, strongly acid, and combined with albumen. I have tried the above, but have not got the desired ‘‘ warm colour.” Probably I for you to do 80, I should be glad if you can publish the necessary conditions to obtain the result I am in search of in the column you devote to ‘* Notes and Queries I am always deeply interested in your Journal. It forms one of the pleasures I look forward to in the coming of a new month. Ans.—Iron developer for warm images : — Sulphate of iron and ammonia, } ounce ; lump sugar, # ounce; glacial acetic acid, # ounce, sulphate of copper, 60 grains ; the albumen of 1 egg well beaten ; water, 1 pint. Dissolve the salts and sugar in boiling water, let it cool, then add the albumen, lastly the acetic acid. Shake well together, let stand for a week, and filter. This improves by keeping, and will require occasional filtering. Irishman.—A mirror must be placed between the condensers, which must be set at right angles. You will find particulars in late numbers of this Journal. Progress.—Write or call at Mr. J. H. Steward's, 406, Strand, they make Army Signal Code J.anterns fitted with limelight, aud this may answer your purpose, with perhaps a little adaptation. Rev. Perkins, D.M., B.D., and W. IT. Mathieson. — Sorry there is no room in this issue, but articles will appear in next. C. W.—The large condenser will not give more light, but will illuminate a larger surface of the slide placed in front. The larger diameter lens under the circumstances will be a distinct advantage. (2) Remove the stuffing from the barrel and dry well; there is doubtless water and foreign matter therc, which makes up the weight you speak of. R.N.—Clean the glass well; put albumen into a small funnel with a plug of cotton wool in bottom, then wet the plate and pass the small end of funnel along an edge of the plate, which should be held in a standing position, and the albumen will flow evenly over. G. writes : Iam about to make a lantern, and wish to do it as cheaply as possible. I learn that condensers increase in price more in proportion than they do in size. Cannot I make one of small diameter answer the purpose. Reply: It all depends upon the size of the slides you intend using. If you are making a so-called toy lantern, slides can be obtained which only require a 1-inch condenser. A rough rule is to have a condenser of such size that when a square slide is laid upon it, the four corners will come within the circle of the glass of condenser. Messrs. SOPER & STEDMAN, 147, Strand, w7ze : 23rd January, 1896. Dear Sin,—We feel it our duty to write and tell you that we are more than pleased with the result of our ADVERTISEMENT which has been inserted in your ‘OPTICAL MAGIC LANTERN JOURNAL" for the past TWELVE MONTHS. We are sure you will be gratified when we tell you we have had ORDERS and enquiries for slides from INDIA, SOUTH AUSTRALIA, MAURITIUS, ZAANDAM, GERMANY, and from ALL PARTS of ENGLAND, SCOTLAND and IRELAND. We can only attribute these orders coming in through our advertisement in your LANTERN JOURNAL, which plainly shows to us that the journal in question must have not used the proper proportions. If it is possible have a VERY LARGE CIRCULATION ABROAD.