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The photographic news
- Bandzählung
- 24.1880
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- 1880
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- Englisch
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- Hochschule für Grafik und Buchkunst Leipzig
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- Hochschule für Grafik und Buchkunst Leipzig
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- Bandzählung
- No. 1124, March 19, 1880
- Digitalisat
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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
Band 24.1880
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MARCH 19, 1880-1 THE PHOTOGRAPHIC NEWS. 143 thoroughly, then immerse in a ten-grain solution of cyanide of potassium, and leave there till the reduction is uniform over the entire surface ; this is easily seen, the most intense parts being the last to clear up ; wash, dry, and varnish. Philadelphia, U. S., March 3rd. John Carbutt. PHOTOGRAPHS BY GASLIGHT. Sir,—As I have noticed several queries in your columns respecting a cheap method of utilizing gas for lighting objects for photogiaphic purposes, it may perhaps not be uninteresting to some of your readers if 1 record my ex perience with a burner purchased by me a few days since, and I beg to enclose a print from a gelatine negative, exposed in my sanctum for five minutes. The lens employed was a Dallmeyer’s Rapid Rectilinear. The subject is a plaster cast of Hercules, and it was illuminated by the Hamo from one burner supplied to me by the Albo-Catbon Light Company, at a cost of about 5s. Gd. or 6s., including two pounds of composition, hereafter alluded to. I placed a white card reHector behind the flame, between it and the curved tubing carrying the burner, and I foun 1 that the power of the light was very considerably increased, and it seems to mo that an ingenious arrangement of several burners and reflectors would furnish photographers with a very economical and efficient light. The flame is small, but very white, and is produced by an arrangement on the following principle : — whchhhEripsfroroppiahthecordinarysburner is unscrewed, and into a ‘“ t0 Gh The screw-cap is taken off, and the globe is partially filled with a solid composition, rich in carbon, supplied by the Company. The cap is screwed on, and the socket dropped into the aperture of the gas piping A. When the gas is turned on, it passes through the hollow cone B, up the tube C, into the globe and out through E into the burner. The flame at first is like that from an ordinary jet, but as the metal plate becomes heated it communicates warmth to the globe. The enclosed composition melts, and gives oft' a vapour which, mixing with the gas, charges it with carbon, and a small brilliant steady flame is the result. 1 may add that I have no interest in the Company, and I know no one connected with it.—I am, sir, yours, 15 , Lee Park, Lee, S.E. Charles D. Davies. [The photograph Mr. Davies forwards us is a full-size cabinet; it is a well-exposed picture, and its details exceed ingly delicate En. P. N.j PRINTING BY DEVELOPMENT. Sir,—I see that an error has been attiibuted to me in my formula for printing by development. In the paper we printed in the Photographic Journal, the amount of water in which the 500 grains of silver nitrate is to be dissolved is 20 ounces, and not 2.—Yours faithfully, W. DE W. Abney.] Aroceedings of Socketies. Edinburgh Photographic Society. The fifth ordinary meeting was held in 5, St. Andrew Square, on Wednesday evening, the 3rd of March, 1880, Mr. John LESSELS, President, in the chair. The minutes of previous meetings were read, passed, and signed ; and the following gentlemen were elected ordinary members:—D. P. Anderson, A. P. Brown, W. G. Slight, P. F. Richards, D. Gregs, Alex. Carrick, W. Notman, W. H. Porter, A B. Scott, James Morrison, and James Mason. Mr. Marshall Wane then read a paper entitled “Remarks on Washing Prints,” and illustrated it by a large diagram of Moulton’s Rapid Washer, as adapted and worked on his own establishment (see page 135). The paper was listened to with evident interest and satis, faction. Mr. Pringle said it was a uice thing to hear such papers read before the Society, as they invariably led to practical results. He had listened to Mr. Wane’s paper with great pleasure, although he did not quite concur in all that Mr. Wane had stated. In his own practice and experience, which extended over a long series ef years, he had experimented with various kinds of materials in printing, and he was inclined to the opinion that a good deal of “ fading ” arose from the use of bad albumenized German stuff made from blood, which stunk so ! No amount of washing, by whatever mode, could overcome this. He remembered the different kinds of washing machines during the days of calotypes, and of the many series of trays then in use, when colour was not considered a matter of great importance. Yet, even then, the matter of colour was being recognized by the public from different points of view. In 1867 Grandville patented a rotary machine, by the use of which prints could be reduced to a state of pulp in no time(?) Then there was the automatic machine, or trough, which was a good thing, and had the advantage of being self-acting ; then there were the syphon troughs and slate troughs, all of which had special advantages claimed for them. But the American machine referred to, and described by Mr. Wane, far surpassed each and all of them ; it was really a capital machine, and he wondered it had not been thought of before. No doubt the public might be satisfied with the prints they get, no matter how produced, but the professional photographer should look to something more than merely giving the public work to please : the public was entitled to receive the best results which a thoroughly practical man could give, and this would bring its own reward. He considered the machine a thoroughly good one. Mr. Alexander Nicol said he quite concurred in what Mr. Wane had said regarding the yellow or buff cards : they were thoroughly bad. Mr. Neilson said he had examined the machine at work in Mr. Wane’s establishment, and thought that there was nothing like it for perfection. Mr. Turnbull and the Chairman also took part in the dis- cussion- Mr. Pillans proposed a vote of thanks to Mr. Wane for bring ing the matter under the notice of the Society. The second paper read was by Mr. William Neilson, entitled ‘‘Principles or Rules of Landscape Photography.” Mr. Neilson, in a few introductory remarks, said it was to be regretted that members generally did not take greater interest in the actual work of the Society. It was, he said, surely no great matter for almost any of the members to write a paper ; yet how few, alas I offered a helping hand to the hard-wrought Secretary in the way of contributions to the Society’s transac tions. He trusted the members would consider the matter, and co-operate with their aid the efforts of Mr. Dobbie. The reading of the paper was quite a treat, and one which the large audience appreciated. Mr. Norman Macbeth, A.R.S.A., said that be had attended the meeting purposely to hear Mr. Neilson’s paper read. From past experience he knew his friend would lay before the meeting valuable and instructive matter for careful study. Such subjects as that presented by Mr. Neilson should be brought more frequently before the Society, and photographers should study them more. Mr. Neilson’s ideas were correct and well-expressed. Mr. Macbeth entered somewhat fully into the subject of art, and gave a clear and easily understood defini tion of what it really was. Photographers, he said, should study to take the pictures when the subjects were unconscious of the
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