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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. 1284, April 13, 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
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THE PHOTOGRAPHIC NEWS. [APRIL 13, 1883. her right eye ; the corners of her mouth are certainly not alike, and her dress in general is arranged for one side or the other. All this she sees daily reflected from her mirror, never taking into consideration that everything is reversed, so we cannot wonder at her exclaiming, when her portrait is handed to her: “ Well, I should never have known it! ” Amateur. Proceedings of Societies. Photographic SocIETY op Great Britain. The ordinary monthly meeting of the above Society was held at 5a, Pall Mall East, on Tuesday evening, the 10th inst., Mr. James GLAISHIER, F.R.S., President, in the chair. The minutes of the previous meeting having been read and confirmed, Mr. R. Murray Lawes was elected a member of the Society. The Chairman announced that Major Waterhouse, of Calcutta, had forwarded to the Society a programme of the International Exhibition to be held there in December next. In Class A, photographers would be admitted; and in Class B, photographic apparatus, chemicals, &c. Full particulars could be obtained from Mr. W. B. Dilworth, of Westminster Chambers, or Major Waterhouse would be happy to furnish anyone with information himself by letter, and he requested that the matter might be brought to the notice of the Society. Mr. James Cadett then read a paper entitled “ On Photo graphy of the Vocal Organs in the Act of Singing.” Mr. Cadett said that before commencing, he must apologise for having left them in the lurch on the occasion of their last meeting; he had had to postpone, at the eleventh hour, the paper he had promised, so they had been left without one. He said that the paper he was now about to read would to many, perhaps, seem superfluous after the lecture given by Mr. H. Trueman Wood at the South London Photographic Society’s meeting on Thursday last, and, but for his promise being given, he would not have presumed to bring it before their notice. He proposed to give a description of some experiments carried out at the laboratory of the Society of Arts, by Messrs. J. J. Ackworth, H. Trueman Wood, Emil Behnke, Lennox Browne, and himself, and would call upon Herr Behnke first of all to explain to the meeting what it was required to photograph. For this purpose he showed on the screen a diagram of the human head in section, which Herr Behnke proceeded to explain, pointing out the soft palate, vocal ligaments, epiglottis, &e., and said that Dr. Lennox Browne and he had determined to obtain photographs of these for the work they had in course of preparation. He also ex plained the difficulties in the way of getting at the vocal organs by means of the camera. Mr. Cadett then proceeded to show that the photographing of the soft palate was a comparatively easy matter, provided the interior of the mouth was carefully lighted ; but to obtain a photograph of the larynx was not so easy, on account of the difficulty of sending the light down the throat of the person operated upon. The most perfect instru ment for effecting this was the ordinary laryngoscope used by surgeons, and Mr. Cadett described the apparatus they had been using in their experiments. It consisted of an electric lamp with a combined condenser, consisting of two plano-convex lenses, to which was attached an apparatus for keeping the condenser cool, consisting of a pail of water fixed on a high tripod stand, the water being made to flow through a cell placed before the condenser. The rays of the light were condensed and thrown upon a side mirror made out of a piece of ordinary looking-glass, and from this mirror they were again thrown on to the small mirror, or laryngoscope, which Herr Behnke fixed in posit ion in his throat, and which served both to bring the vocal ligaments into view, and also to illuminate them. In front of the camera lens, another small mirror was placed, fixed on a sliding shutter. By means of this mirror, Herr Behnke was able to see when the laryngoscope was in the proper position, at which point he gave the signal that he was ready, and the sliding shutter was then, by a pneumatic arrangement, moved from the front of the camera lens. A slide was exhibited on the screen, showing the apparatus used by Dr. Stein some years ago, sunlight being used, and the rays thrown into the mouth of the patient by an arrangement of mirrors. In this case the patient tied his tongue down while holding the mirror in position in the throat. The exposures were more rapid than by the electric light, probably because sunlight was used, and were made by means of a drop shutter, to which one end of a piece of string was fastened, the other end being attached to the foot of the person operated upon, who moved his foot and let the shutter fall as soon as he saw the image in proper position. The great disadvantage of this method was that the mirror was placed at one side, instead of being in front of the lens of the camera. A transparency was also shown from a collotype print from the original negative taken by Professor Czermak in 1860, which Herr Behnke explained, pointing out the back of the tongue, epiglottis, cartilages, &c., and the vocal ligaments. Herr Behnke thought that considering the difficulties that had to be encountered at the time this negative was taken, Professor Czermak had succeeded very well. Mr. Cadett then proceeded to show on the screen photographs exhibiting the positions of the soft palate in the production of different sounds, and also the contraction which the uvula undergoes when producing tones in contradistinction to when breathing. Dr. Lennox BROWNE wished to say, with regard to Professor Czermak’s photograph, that he found it difficult to believe that it was really a photograph ; but he wished to remark that the slide that they were now looking at, taken in conjunction with those lately produced, proved the correctness of the drawings which they possessed of the vocal organs. He wished to thank Mr. Cadett, the Photographic Club, the South London Photo graphic Society, and the Photographic Society of Great Britain, for the enthusiasm they had shown in aiding Herr Behnke and himself in their work. The Chairman thought the subject was one of very great interest to photography, as it tended to prove its great and in creasing usefulness. Mr. Francis Cobb drew attention to the great difficulties which had to be met in photographing the vocal organs, from the fact that the vocal cords while in the operation of forming sounds were in a continual state of vibration, and he thought all photographers would be able to appreciate the difficulties that had to be overcome under such circumstances. Captain Abney said he had met with similar difficulties when photographing the interior of the eye. Dr. Lennox Browne did not think the difficulties were so great in photographing the eye, there being no vibration ; though the photographs obtained of the eye had been of much moie value to medicine, because the conditions of photographing were much easier. An opportunity was then afforded to the members of seeing Herr Behnke exhibit his vocal organs by means of the laryngo scope ; after which The Chairman asked the members for a very hearty vote of thanks to Messrs. Cadett and Behnke. He thought they must all acknowledge that it had been a very interesting paper indeed. He also asked for the thanks of the members to the Autotype Company, who had sent them some photographs for the walls, which would otherwise have been bare this evening; also to Mr. Leon Warnerke for some Russian pictures, lent for the same purpose, Mr. Garrett Cocking showed on the screen a negative of the vocal organs taken with the lime-light. The meeting was then adjourned till Tuesday, the 8th of May. South London Photograpiiic Society. The ordinary monthly meeting of the above Society was held in the House of the Society of Arts, John Street, Adelphi, W.C., on Thursday evening, the Sth inst., the Rev. F. F. Statham, M.A. (President), in the chair. The minutes of the previous meeting having been read and confirmed, Mr. John Downes was elected a member of the Society. The Chairman observed that he had, perhaps, been a little premature in congratulating the members, on the occasion of their last meeting, on the success of the new arrangements for the artistic competitions. Though last month there had, un doubtedly, been an improvement both in the numbers and merit of the pictures sent in, he was sorry to say that on the present occasion there was a considerable falling off, at least, in the number of competitors; and, in fact, for the figure subject, “Always in Trouble,” not a single picture had been sent in, whether owing to the difficulty of the subject or not, he could not say. It had occurred to him, and he had mentioned the matter in committee, that under their new arrangements, by which each member present proposed a subject for competition in
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