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JUNE 8, 1883. | THE PHOTOGRAPHIC NEWS. 367 new bath every time of toning, as it is then always the same, and it does not appear to improve by keeping.— I remain, yours truly, E. Williams. BRISTOL (TRIENNIAL) INTERNATIONAL PHOTOGRAPHIC EXHIBITION. Dear Sir,—Will you kindly make it known, that in accordance with the decision arrived at nearly three years ago, the above Exhibition will be a triennial event. This is the year for again holding it, and prize lists may now be had ; the general arrangements being already in hand. We have not only been promised, but have evidence of a large number of entries, and we anticipate an Exhibi tion equally successful with the last. I write this, as it may be well that, in the face of suggestions for exhibitions elsewhere, it should be generally known that the Bristol Exhibition takes place in December next, for I think all Secretaries are agreed that many exhibitions in the same year are not desirable. —Yours faithfully, H. A. Hood Daniel, Hon. Sec. Proceedings of Societies. Liverpool Amateur Photographic Association. The usual monthly meeting of this Society was held on Thurs day, the 31st ult., at the Free Library, Mr. B. Boothroyd, President, in the chair. The minutes of the April meeting having been read and con firmed, Mr. J. H. T. Ellerbeck explained that the pictures shown by him at the last meeting were not by himself, but by Mr. B. J. Edwards, the maker of the plates, and were taken with that gentleman’s own shutter. The Chairman announced that the invitation to the members of the Association by Mr. L. Hughes, to spend a day at Conway, had been accepted for Monday, June 18th ; but that the Council had decided not to allow Mr. Hughes to bear the ex pense of the transit of the members to Conway. Mr. G. F • CHANTRELL was elected a member of the Associa tion. Mr. Ellerbeck (who was good enough to act for the Hon. Secretary in his absence through indisposition) read a letter from Mr. Craddock, kindly enclosing for the Society’s album some pictures from paper negatives of thirty years ago. Prints from these negatives had been exhibited in the Great Exhibition of 1851, and had attracted the notice of the late Prince Consort, who had written to Mr. Craddock for copies. The prints were very fine specimens of landscape and architectural photography, and, apart from their own intrinsic excellence, were remarkable from the fact that they had not been toned, but merely fixed and washed. The tone, notwithstanding, was an exceedingly good one, consisting of a rich warm brown. Cordial thanks were accorded to Mr. Craddock for his interesting communication, and for his valuable contribution to the Society’s album. Mr. A. W. Beer then read a communication on the subject of the Association’s May excursion to Knutsford and neighbour hood (see page 364). Prints from negatives taken on this occa sion were exhibited by Messrs. Tyrer, Ellerbeck, Beer, and Rutter. Dr. Kenyon exhibited Boca’s chronometric shutter, and made some remarks explanatory of its action, speaking in terms of commendation of its accuracy of exposure. Mr. W. H. Kirkby thought that its action would involve vibration of the lens at the moment of its greatest opening. Dr. Kenyon said that nothing of the kind occurred in practice. The following exhibits were also made:—By Mr. Rutter: negatives on Pumphrey’s films, with prints from them. Mr. Ellerbeck : Smith’s brattice stand, which, in its combination of exceeding lightness with perfect firmness, was much admired. Mr. Twigg : two fine enlargements in carbon, by the Autotype Company, of one of last year’s prize pictures by him, of a view at Coniston, and one of Pull’s Ferry, Norwich, also by himself. Mr. Tyrer : beautiful plantinotype prints on the textile fabric recently introduced by the Platinotype Company. Mr. Dodd, Middlesborough : several prints from negatives taken on plates of his own manufacture. The Chairman : a Harvey’s drop and flap (Phoenix shutter) made on Mr. Roberts’s principle. Mr. Ellerbeck : a so-called “ detective ” camera, working in an ordinary courier bag, with an exposure of one-fiftieth of a second, this being made by lifting up for a moment the flap of bag and by a spring letting off the shutter. To regulate the focus, to the pinion of lens was attached a needle which pointed to a dial having a record of distance, which has to be judged by the operator. Several street figure studies, &c., were passed round illustrating its purpose. A cordial vote of thanks was passed to Messrs. Coltart, Beer, and Kenyon, also to others who had exhibited, and the meeting was adjourned. Bristol and West or England Amateur Photographic Association. The ordinary monthly meeting was held at the Studio, on Wednesday, 23rd May, Mr. J. Davey in the chair. A letter of absence having been read from the Honorary Secretary, and the minutes having been confirmed, The Chairman called upon Mr. Brightman to read the second part of his paper, “ The Carbon Printing Process.” Mr. Davey enquired what was the so-called “safe edge,” and its object in carbon printing. Mr. Brightman explained that the safe edge consisted of four narrow strips of semi-transparent paper pasted on the edges of the negative, its object being to prevent a thick film of gelatine at the edges of the print, it being found in practice that a dense deposit of the insoluble gelatine at the edges is liable to induce frilling of the film ; with a thin border the tendency to frill is avoided. In reply to an enquiry by Mr. Davey as to whether any pre paration was used to cause the film to adhere to the glass in transfernng, Mr. Brightman replied that the film, when moistened, would adhere to any non-porous substance by atmospheric pressure, on the same principle as the leather sucker used as a toy by school boys ; but in some cases, with tissue, in which a difficulty was found in securing perfect adherence, the glass plates might be previously coated with a thin film of gelatine, rendered insolu ble by chrome alum. Mr. Brightman’s paper was listened to with evident interest, and a vote of thanks was unanimously passed to that gentleman. London and Provincial Photographic Association. At the meeting held on the 31st ult., Mr. J. Trail Taylor (the Chairman) alluded to the loss art and science generally had sustained by the death of Mr. S. J. Pearsall. Mr. Henderson showed prints and enlargements of the Derby negatives. The Chairman showed a tripod head devised by the Scovill Manufacturing Company, to allow the camera to be reversed from a horizontal to a vertical position without unscrewing ; the head was hinged so that the camera could be folded down against the side of the stand; and he said that in the original the head consisted of two plates, so that the camera could be turned without moving the stand. Mr. Henderson suggested the use of a base-board, on which the camera could slide in N-shaped grooves, the catches being hinged, so that when the camera was wanted to be reversed, it would only be necessary to run it to the end of the board, and turn it over. He further said that about 1865, Mr. Hislop de vised a camera-stand for photographing objects below the level of the camera ; it was hinged so that the camera would be turned right over, resting against the stand, and the lens pointing directly downwards. Uulk in the Studiu. Photographic Society of Great Britain.—The last meet ing of this Society for the present session will be held on Tuesday next, June 12th, at 8 o’clock, in the Gallery, 5a, Pall Mall East, when papers will be read by Mr. J. Spiller, F.C.S., “ Collodion and Pyroxyline : the Question of Permanence ; ” and by Captain Abney, R.E., F.R.S., “The Effect of Pressure