The photographic news

• Bandzählung: 12.1868
• Erscheinungsdatum: 1868
• Sprache: Englisch
• Signatur: F 135
• Vorlage: Hochschule für Grafik und Buchkunst Leipzig
• Digitalisat: Hochschule für Grafik und Buchkunst Leipzig
• Digitalisat: SLUB Dresden
• Rechtehinweis: Public Domain Mark 1.0
• URN: urn:nbn:de:bsz:14-db-id1780948042-186800009
• PURL: http://digital.slub-dresden.de/id1780948042-18680000
• OAI: oai:de:slub-dresden:db:id-1780948042-18680000
• Sammlungen: LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
• Sammlungen: Fotografie
• Strukturtyp: Band

• Digitalisat: SLUB Dresden
• Strukturtyp: Ausgabe

284 THE PHOTOGRAPHIC NEWS. [June 12, 1868. experiments by photos, generally, and with Newton’s silver bath, careful manipulations, and by using a good quality of paper, the American photos, will still maintain the lead in the beautiful art of photography.-r-Humphrey's Journal. •roreedings Of Societies. London PIOTOGRAPHIC SocIETZ. The closing meeting of the session was held in the Architec tural Gallery on the evening of Tuesday, Juno 9th, Mr. Sebastian Davis in the chair. The minutes of a previous meeting were read and confirmed. Mr. DUNMORE exhibited a commodious tent for field work, which he designated the “ Truck Tent,” the dark room and carriage being in combination, or capable of being detached at will. When packed up it consisted of an oblong box, and square box of chemicals, upon an iron truck or frame with wheels and handles. The tent, when opened and arranged for work, consisted of a wooden tray opening like a chess-board, and to which the sides of the tent, made of framework covered with American cloth lined with brown paper hinged together, were fastened by thumb-screws on the inside. The top, similarly constructed, was then laid on and secured by hooks-and-eyes. A tray 94 mackintosh material is placed on the table for the sake ol cleanliness, through which a bent and pointed funnel is thrust to carry off waste solutions. A bag of material im pervious to light, open at both ends, was then hung over the open end of the tent, to which it was fastened by tape, for the ingress and egress of the operator. The window consisted of several thicknesses of yellow calico saturated with lac varnish. Mr. DUNMORE, in answer to various questions, stated that the tent when open gave a working space inside of three feet each way. The total weight of tent, box of chemicals, and con tents was about three-quarters of a hundredweight. It was large enough for working IG-inch plates with comfort. He generally intensified and fixed, if necessary, at home. The tent was intended for standing to work. Ho had an arrange ment of cords to which pegs were attached to place in the ground to prevent the tent being blown over by the wind, but he had never had occasion to use it. He could not move this tent about without repacking, an operation which could be per formed in five minutes. For largo plates it could scarcely be expected that a tent could, when erected, be moved about without packing. Mr. Frank Goode said Ihat Mr. Frith had an arrangement for working large plates 20 by 12, in which the tent and camera were one, all the manipulations being effected inside the camera. He thought that in using a tent standing was best, although some good photographers preferred sitting,—Mr. Frith for instance. He suggested that the chemical box might be con verted into a cistern, and placed on the top of the tent with water. After some general conversation. The Chairman, in proposing a vote of thanks, said that the especial point of excellence about this tent seemed to consist in the large working space it gave when opened compared with the small space into which it packed. After a vote of thanks to Mr. Dunmore, Dr. Mann read a paper describing the mode of working employed by Professor Piazzi Smyth in producing his photo graphs of the Pyramids, and exhibited the apparatus, as well as some negatives and enlarged transparencies produced there from (see page 278). Dr. Mann further stated that he, in conjunction with Mr. Dallmeyer, had compared the enlarged pictures produced from these negatives with some of the same size taken direct with a triple, and he was bound to admit that the definition was not so good in the enlargements as in the direct pictures ; but still the results were exceedingly good. The especial necessity for the mode of working adopted by Professor Smyth was caused by the circumstances under which he had to work in the Pyramids. With ordinary appliances he would probably have got nothing. The dust would have been a serious obstacle if the plate had not been exposed in the the bath. Th# porta bility was a great convenience; Professor Smyth was able to carry the bath about hanging on his little finger. The nega tives were not quite free from stains. Mr. SPILLER, referring to the measuring rod which Dr. Mann had pointed out as included in all the photographs, said that the plan of photographing a rule to serve as a standard of measure in each picture had long been employed in the military photographs taken at Woolwich. In photographs of target practice they photographed a 2-foot rule to aid in estimating the size of the perforation made. Mr. Foster suggested that enlarged collodion positives might be printed from the small negatives in the camera, and transferred to paper in the manner adopted by Mr. Disderi. He wondered ihat this method of enlargement was not more extensively practised. Dr. Mann said the same idea had struck him, and he in tended to try it with these negatives. He remarked that ho had examined some faces in the negatives under an inch power, and in cases where, so examined, nothing appeared but transparent glass, detail and form appeared in the en larged p holograph. The Chairman, in proposing a vote of thanks to Dr. Mann, referred to the enlargements as very satisfactory, and expressed a conviction that for amateur purposes the plan in question was worth more attention. After a vote of thanks to Dr Mann, The Chairman said that the meeting would now stand adjourned until November, when the session would be opened by an exhibition meeting, to which he urged all photographers, members, and others to contribute, as it was only by the excellence of such exhibitions that the public could be made familiar with the real excellence and progress of the art, and become acquainted with its real powers. The proceedings then terminated. Oldham Photographic Society. The first out-door meeting of the above Society was held this year at Lymm, on Thursday, June 4th. The weather (with the exception of a slight breeze) being fine, the party, numbering 35, were in great spirits. Arriving at Lymm, and, after refreshing the inner man, a group was taken, and then separated in search of the picturesque. The dry-plate workers got on very well with their camera and tripod ; but, alas ! for the wet-plate mon, some of them quite agreed with Mr. Beverley on the dry-plate process, that « Britons never shall be slaves.” At the next ordinary meeting the prints will bo exhibited, when we shall have something more to say about the work. We are happy to say that no accident of any kind happened, the whole party arriving safe at Oldham about eleven o’clock, highly satisfied with their trip to Lymm. North London Photographic Association. The concluding meeting, for the present session, of this Society, was held on the 3rd inst., Mr. Oooper occupying the chair. Mr. Fox (Stock Exchange) having been admitted a member, the Society proceeded to dispose of business of a private nature, after which the Chairman announced that the first meeting of the next session would bo held on the 7th of October, Photographic Society of Marseilles. The monthly meeting of this Society was held as usual, M Arthur Taylor in the chair. M. Vidal, referring to a communication from M. Marion on his new pellicle, stated that he had made one trial with an old negative varnished with lac. The transparent pellicle, instead of being made to float on a plate wet with alcohol, as indicated by M. Marion, was placed on the negative, which had been previously covered with alcohol and allowed to drain. The adherence was perfect, and the water bath, after desiccation, brought about a complete separation of the negative film from the glass. No doubt with new negatives the operation could be performed with the the utmost certainty, and there was great advantage in having these transferred negatives, which could be printed at pleasure from one side or the other, like nega tives on waxed paper. The Chairman showed some good results obtained by carbon printing direct through paper. He had studied the influence of a greater or less quantity of colouring matter introduced into the gelatine, and arrived at surprising results with only a very small amount of it. In these cases the parts impressed were very brilliant, whilst the image was so much deepe