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The photographic news
- Bandzählung
- 24.1880
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- 1880
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- Bandzählung
- No. 1121, February 27, 1880
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Zeitschrift
The photographic news
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Band 24.1880
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- Register Index 631
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Band 24.1880
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106 THE PHOTOGRAPHIC NEWS. [FEBTUARY 27, 1880. further information he may desire if he choose to apply for same. My advice to all who are commencing the photo graphic art is to remember the old nursery rhyme: “ If at first you don’t succeed, Try, try, and try again.’’ RELLiNr Mu. HOW TO PHOTOGRAPH BY GASLIGHT. Dear Sir,—I want to take a good photograph by common gas-burners. As 1 have wasted over a dozen plates with no result, I should be greatly indebted to any of your correspondents who will kindly inform me how 1 may proceed successfully.—Yours obediently, F. R. Broreedings at Edinburgh PHOTOGRAPIC Society. This Society held its second Popular Meeting in Queen Street Hall, on the 18th ult. The President of the Society (Mr. LESSELs) occupied the chair, and, in a short speech, introduced the lecturer, Mr. W. H. Davies, whose subject was entitled “ Photographs from the Works of Living Artists ” (in our next). After the pictures had been exhibited, a vote of thanks was moved by Mr. M, G. Dobie, and carried by acclamation. Glasgow Photographic Association. A meeting of the above Association was held in Mr. Robertson’s studio, Glassford Street, on Thursday evening, the Sth inst.,— Mr. J. J. Long, President, in the chair. The minutes of the last meeting having been read and con firmed, the following gentlemen were then duly elected membersMessrs. Horatio Paterson (Glasgow), W. Rodgers (Stirling), and W. J. Hogg (Glasgow). Mr. TAKNAIILL read a paper “ On the Conversion of Old Silver Negative Baths into Printing Baths.”, Mr. J. Urie (Dundee) exhibited an apparatus for taking pictures by gaslight; he described it as so arranged on castors that it may be wheeled to any part of the studio or right round the sitter, and any view of him may be taken. The principal reflector is the old oval concave reflector, five feet long by three feet wide, balanced on an iron stand made of one and a-half inch gas pipe, with sliding rods to work similarly to a head-rest, to elevate or lower the reflector for standing or sitting figures. By an arrangement the reflector can be thrown forward at the top or bottom, so as to angle the direction of the rays of light. The gas burner is made by bending four pieces of half-inch gas pipe into rings so that each may easily go into the circle of the other, the outer ring being about nine inches diameter, each ring being attached to an in.ch supply pipe. Into these rings are drilled as many holes asw'll admit about one hundred burners, and to each ring or set of rings may be attached a stopcock, and the whole may be used, or only part of the supply, for focussing. This burner is swung upon a rod the ends of which rest on notched horizontal slits made in the sides of the reflector, so that when the reflector is tilted the light may be brought into its optical focus. By this arrangement the burner keeps its perpen dicular or upright position. Over the burner is placedaglassfun- nel 20 in. high and 12 in. diameter. On the top of this funnel is an iron pipe with a damper to regulate the draught, and partly to support the glass tube, which it fits. On to this, again, is attached a rod coming up from the stand to steady all, and on the roof is hung an ordinary shop-window reflector connected to a chain and worked with pulleys, so that it may be lowered or swung to any side. By this means the shadows are taken out of the background, and the light modified as required. The whole is fitted with india-rubber tubing, so that the apparatus can be moved to any part of the studio. Photographic Club. At the usual weekly meeting, held on Wednesday, the 18th inst., Mr. Henderson exhibited an adaptation of Richardson’s spray diffuser, for use in making gelatine emulsions, and ex plained his method of using the same. A solution of bromide of silver was placed in a graduated bottle, and the pipe of the diffuser inserted through the cork; the required quantity of this solution was then “ pumped ” into the dissolved gelatine. He claimed, and also showed by experiment, that the bromide or silver was thus forced into the gelatine solution in an exceed ingly fine spray, and thus became more intimately mixed with it than could possibly be done by any other method yet adopted. He also exhibited an ingenious adaptation of Clarke’s Infant Food Warmer, for the keeping of gelatine emulsion hot, and also as a pourer for coating plates. At the same meeting Mr WARNERKE exhibited some phos phorescent powders which emitted coloured rays, some of which were very brilliant, the violet one especially. Photographic Society op Ireland. The usual meeting was held at the Royal College of Science, on Friday, the 13th inst.; Mr. Thomas Mayne, T.C., in the chair. The minutes of the previous meeting having been read and confirmed, Mr. Howard GRUBBE, F.R.A.S., read a paper on actinometers, giving a resume of the various endeavours which have been made to supply photographers with a suitable photometer. He pointed out what such an instrument, to be successful, should be able to do, and showed where existing photometers fell short of what was really wanted, and were, therefore, of comparative value only. The principal reason of this was that they measured the light surrounding the instrument, and not the light reflected from the subject being taken. It was also considered that the estimate by the actinometer ought to be simultaneous with the exposure of the plate, as it is fully admitted that the light is frequently of a constantly varying intensity. An animated dis cussion followed the reading of Mr. Grubb’s paper, the general tone of which was that we have still to look for a really practical actinometer. Mr. J. V. Robinson brought before the meeting some novel properties of phosphorescent light, which further investigation might show to be of importance. He found that a surface prepared with one of the phosphorescent paints, if exposed to light in parts only, and then placed in contact with a dry plate, and after an exposure of five seconds with ordinary development, the plate rendered the image of the exposed portion of the card; further, he found that if the card were placed in a camera in the place of an ordinary plate, after the exposure a luminous impression was obtained, which by simple contact with the usual photographic substances would produce a picture. The subject was considered so novel that it was hoped further experiments would be made by Mr. Robinson. The meeting then adjourned to Friday, the 12th of March. Proposed Photographic Association for Dundee. A meeting was held on Thursday, the 19th, in the Masonic Hall, Meadows Street, Mr. Jas. C. Cox in the chair, for the purpose of forming an Association for the advancement of photography in the East of Scotland. There was a large atten dance of the principal photographers from Dundee and district. The Chairman, in opening the meeting, said it gave him great pleasure to see so much interest taken in the proposed Society; he had no doubt that if properly started it would do much for the advancement of the art. Mr. S. F. Rogers spoke as to the good that might be derived not only to the photographic profession, but to amateur artists and chemists, were such a thing in existence in this part of the country, and also asked pardon for the liberty a few members had taken in sending out circulars calling a meeting. Mr. J. Urie, jun., Secretary pro tem., read several letters from gentlemen all wishing to become members were such a Society formed, and said he had the names of a few more who were unable to be present at this meeting. Mr. W. S. Tannahill proposed that a Society be formed for the three shires—Fifeshire, Forfarshire, and Perthshire—the meetings to be held in Dundee. Mr. 8. F. Rogers seconded the motion, which was carried unanimously. A Committee was then appointed of Messrs. John Urie, W. S. Tannahill, S. F. Rogers, A. Robertson, C. John ston, and H. Fraser, to draw up rules, and submit them to the next general meeting to be held on the 4th of March in the same Hall. A hearty vote of thanks to the Chairman terminated the meeting,
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