The Optical Magic Lantern Journal (February 1897)

40 The Optical Magic Lantern Journal and Photographic Enlarger. WEN Cee 9KS2QAYLY Oe ‘| Petes and Queries. ii Ch 8 Og E.C.—The paper referred to is a small four-page one issued quarterly by J. H. McCollin & Co., lantern dealers, 631, Arch Street, Philadelphia, U.S.A. R.—36 inches long, 6 inches wide, and 5 inches high. Alfred King.—We cannot supply name and address of a contributor, but if you send under cover to us a stamped envelope addressed to W. H.S., we will fill in the name and address, and forward same, If, then, the writer of the article cares to communicate with you, all well and good. Explosion (India).—It is perfectly safe, in our opinion, to use the fittings you state with the generator. We have had such in use for more than a year. An article in the January number would doubtless have been of interest to you. Constant Reader.—(1) In the body of the lantern, close up to the condenser, a slot may be made in either side— bi-unials are usually provided with this—throvgh which along slip of glass tinted with various gradations is slowly passed. These slips arc commercial, and may be obtained from any dealer at emall cost. They are very useful for showing the effect from sunlight to moonlight. (2) A deep tone to represent church bells in the distance can be obtained by suspending a brass tube (length and thickness according to tone desired) by string, and striking it with a soft or muftled hammer. A. Witliams.—Paints may be obtained from Barnard & Son (see their advertisement on another page). Riley Bros.—Sorry we are unable to supply any further information on the subject, but can refer you to the inventors, Messrs. Schott and Genosser, of Jena, Germany, from whom all particulars may be obtained. We learn however, that the glass is not very clear. S. White—-We have referred the mat’er to Messrs. W. H. Smith & Son, and they say there seems no reason for the delay mentioned, as they obtain their supplies of this journal promptly. J. B. Janes.—The form of gencrator has nothing whatever to do with the intensity of light given. We wrote giving the address where the light could be seen in operation. Ira Warris (Syria). — We received your letter of December 28th enclosing stamped letters to a number of our advertisers, which were at once forwarded. Condenser.— There seems to have been some delay on the part of Messrs. T. T. & H. in bringing out their special condenser, and, as far as we know, it is not yet perfect. It was their intention to have had it ready for the commencement of the season. Exhibitor writes: ‘‘My father informs me that many years ago he remembers a specially interesting lantern slide being exhibited somcwhere jin Regent Strect. It consisted of an arrow being shot from a bow in a particularly natural manner, so much so that the straining of the bow was observable. I have tried many dealers in lantern requisites, but cannot get any information where such can be obtained. One dealer said it was done after the style of the comic slipping slide with a mask covering up the arrow, but as thia would then show the bow strained without an arrow to keep it so, I, as a last resource, make bold to write to you on the subject,” Ans.—Had you applied to us in the first instance you would have saved yourself much trouble. The dealer who suggested the slipping slide is entirely wrong A slide such ag you mention was shown some years ago at the Royal Polytechnic, Regent Street, and was not then commercial ; on the contrary, was guarded as a secret. Even: ually, it came into the possession of Mr.W. R. Hill, and through his kindness we were enabled not only to inspect it, but also obtained permission to publish working details. This we published with four drawings in this journal for August, 1893, and if you will get that number and follow instructions, you will possibly be able to make one for yourself; that is, of course, presuming you have the artistic ability. Itis possible that Mr. Hill would undertake to make one ; it is his invention. Lanternist.--The last journal had just gone to press when your enquiry came. The pin might be mace either of silver or platinum, as either will be of much higher melting point. T.P.O.—We are glad to hear of the great assistance in connection with lantern matters rendered by your daughters. We have repeatedly given the instructions you require in this column. However, we repeat them among our Notes in this journal, as by that means they will find a place in our next index; this wi!l enable them to be referred to at any future time without much trouble. Metal Turner.—We do not answer questions unless the name and address be given us (in confidence). Walter Pindar.—Kindly note for future guidance that our address from Chancery Lane, to the present one, was changed about a year ago; we mention this as you addressed your letter to Chancery Lane. You can get the style of slides you speak of from Bernard and Son, Berners Street, Oxford Street, W., or Theobald and Co., of Farringdon Street, but almost every small dealer now keeps them. J. A. Pitt.—Thanks for the suggestion ; we willtry and see if we can adopt it in the near future. H. A. Sanders.—Hardly the class of matter suitable for our columns ; sorry we cannot use it. G. EI. Lithgoe-—We understand from the use of the particular jet that it is excellent in every respect. An article on this subject will appear as soon as a few experiments are completed. J. B. H.—We know of nothing to remove the smell, but perhaps the addition of a little scent might disguise it somewhat. E.C.H. (Victoria.)—(1) See the description of the apparatus in back numbers, the same appliance that projects the pictures can be used for taking the ncgatives. (2) The motion is not continuous in the camera, there being a short standstill of the film during exposure. (3) A shutter is used. Mr. Gro. Cook, 7, Millburn Place, St. Andrews, N.B., writes, January 2nd :—‘‘I ought to have written you before this date to congratulate you on the issue of the ‘Magic Lantern Almanae and Annual for 1897.’ Itisin my opinion athoroughly reliable production and should certainly be in the hands of every lanternist. There is to be found in its pages many valuable hints which will come in handy even to the operator of long experience. I have already found it so, snd I have now been over twenty years at this hobby. The articles are good, useful and well written, and the advertisement pages will be found a boon and a blessing. I wish the Annual every success, as it undoubtedly deserves."