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The photographic news
- Bandzählung
- 27.1883
- Erscheinungsdatum
- 1883
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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. 1273, January 26, 1883
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Zeitschrift
The photographic news
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Band
Band 27.1883
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- Titelblatt Titelblatt I
- Register Index III
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Band
Band 27.1883
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- Titel
- The photographic news
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JANUARY 26, 1883.] THE PHOTOGRAPHIC NEWS. 63 permanent processes yet invented, and could be easily learned and managed by anyone. He then explained the preparation of the paper, and developed several prints, which were handed round the room, exciting the . surprise and delight of the audience. Messrs. BUCKLEY and FULLALOVE gave a lantern exhibition, the views consisting of local and other scenes taken by the members during the late summer. Mr. Coote exhibited a few of his own slides, which were of a very superior kind. Besides the photographic department, several local artists had sent pictures both in oil and water colour, which gave a varied character to the exhibition, very pleasing to the eye. The success of the soiree was so pronounced that many suggested the keeping open of the exhibition for another evening ; but, owing to matters over which the committee had no control, the idea was abandoned. The large company dispersed about eleven p.m., all well pleased with the evening’s entertainment. LoxDox and Provincial Photographic Association. At the meeting held at Mason’s Hall Tavern, on Thursday, the 18th inst., Mr. E. J. Golding iu the chair, Mr. Cowan said it had been stated by Captain Abney that chloride plates could be made as sensitive as bromide. He (Mr. Cowan) had prepared a batch giving the emulsion half-an- hour’s boiling, by which he obtained a transparency with about twenty seconds’ exposure to a gas-flame ; a bromide plate under the same conditions would have required about three seconds’ exposure; he developed with theferro-citro-oxalate solution, and obtained a fine black image. The Chairman found that chlorideplates were much more sensitive to day-light than gas. Mr. Barker said he had obtained very different results with different chlorides. It was asked what would be the result of putting a second quantity of bromide of potassium in the developer. Mr. Barker thought it would destroy the image. Mr. DEBENHAM said Dr. Maddox’s original plates were pre pared with an unwashed emulsion containing bromide of potas sium. Mr. Henderson inquired how long a plate containing a quarter of a grain of bromide of potassium would retain the image ? Mr. Barker said that, when the film contained a free haloid, the larger the proportion of gelatine the longer the image would be retained. In answer to an inquiry as to whether plates that had been exposed could, after soaking in a solution of bromide of potas sium, and keeping some time, be re-exposed, Mr. Brown said he had successfully done so. Mr. Henderson said leucine washed out most readily, and gum left the emulsion in a much more spongy condition. Mr. Ashman found, that when gum was used to emulsify in the film, it contained a number of transparent spots, which he attributed to the gum not thoroughly washing out. Mr. Henderson said that most samples of gum contained a substance which it was very difficult to dissolve. Mr. Barker said gum consisted of two bodies, one (the smaller portion) being only soluble in alcohol, the other in water. Mr. Smith had found crystalline deposits in glycerine, which Washed quite clean and transparent, and consisted, in his opinion, of sulphate of soda or magnesium, which had been used to adulterate the glycerine. Mr. Brown said castor oil was sometimes used to adulterate glycerine. A discussion took place as to what constituted an emulsion. Mr. Henderson had seen one prepared from malt extract and castor oil. Mr. Mackie understood it to be a mixture of two substances, which could only be combined by the aid of a third. Mr. Debenham said it was a substance held in suspension, and not in solution. Mr. Beach (New York, U.S.A.), was elected an honorary and corresponding member of the Association. Manchester PHOTOGRAPMIO Society. The ordinary meeting was held iu the Lecture Hall of the Mechanics’ Institute, on the evening of the 11th inst., Mr. J. W. Leigh occupying the chair. The minutes of the previous meeting were confirmed, and Mr. D. Shoosmith was elected a member of the Society. Mr. Kershaw showed a very good arrangement for changing plates in the field, which consisted of a single dark slide with some light-tight material fastened on securely at the back, forming a kind of bag, with sleeve holes on each side, through which the box of plates is put ; the slide is opened, downwards, the exposed plate removed, and a new one put in its place. The remainder of the evening was devoted to a sale by auction of the property of the members ; and, in response to the circular sent out by the Secretary, a great many availed themselves of the opportunity of disposing of what, to themselves, was only use less apparatus. Altogether, 120 lots were put up, including lenses, cameras, tripods, lanterns, and numerous other articles. Upwards of £50 in value were Bold. Mr. Thomas Acton kindly gave his services as auctioneer. The experiment was pronounced a decided success. A vote of thanks was given to Mr. Acton for so ably assisting at the sale, and to Mr. Kershaw for his contribution. The meeting was adjourned to February 8th, when Mr. Johnson will read a paper on “ Photo-micrography.’’ Ualk in the Studis. South London PHOTOGRAPMIC SOCIETY. —At the next meeting of the above Society, to be held at the Society of Arts on Thursday next, February 1st, Mr. W. Brooks will read a paper entitled “ The South London Photographic Society’s Popular Lantern Meeting, and its Lessons.” The Uncovering of the Statue of the Prince Imperial.— Although it was a dull day when, a week ago last Saturday, the Prince of Wales unveiled the statue erected to the memory of the late Prince of France, Mr. Cobb succeeded in obtaining a capital picture of the ceremony. The enclosure of the Royal Military Academy at Woolwich was crowded with Visitors, and Mr. Cobb took his picture from a waggon placed about twenty yards from the statue. The Prince of Wales is shown just in the act of unveiling, the cover having commenced to move before the exposure was made. Some verses from the pen of Mr. Cobb accompanysthe print; and we understand that both the Prince of Wales and the Empress, in accepting copies of the pictures, expressed their appreciation of Mr. Cobb’s poetical efforts. Obituart.—It is with much regret that we have to announce the death of Mr. G. S. Crawford Barnes, one of the pioneers of photography. The deceased gentleman was one of the earliest Daguerreotypists, and for many years chief operator to Messrs. Lock and Whitfield. His death occurred on Monday last, suddenly, a* Inverness, where he had recently commenced business. He leaves a widow and seven children. Findlay’s Comet.—Mr. Ferneyhough, of Pietermaritzburg, Natal, whose comet pictures we recently commended in these columns, tells us how they were secured. He says:—“ They were taken with a Dallmeyer's portrait cabinet lens on Wratten and Wainwright’s instantaneous plates, exposure seven and five minutes. My success lay in that I discovered that at a certain stage of the dawn the rising sun was in a position to light it up to double its actinic power. This lasted about ten minutes, and then it began to fade. I spent nearly a week examining it, from the rise until the sun rose, before I tried an exposure, and to this apparent waste of time and sleep 1 owe my success.” Peck’s Milwaukee Sun says:—“A Pittsburg glass factoyr is turning out glass cloth, made of fine spun glass, which is used for dresses. We should insist on a sheet iron or zinc lining for a dress, if it was to be worn by any friend of ours. A glass dress might be all right if a person wanted to see the innermost recesses of the soul, and the workings thereof, but it is not neces sary to witness such variety-shows these days. Alapaca is better for dresses than glass.” If this glass cloth can be manufactured at a low rate, it should be a valuable filtering material for photo graphic preparations, and far more convenient in use than the ordinary glass wool. Photograthing the Vocal Organs.—Mr. H. T. Wood informs us that, by the aid of a very ingenious apparatus, devised by Mr. Cadett, with the double object of illuminating the subject and enabling the exposure to be properly timed, some highly successful photographs of the human vocal organs have been obtained, these results being a decided advance on those referred
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