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retouchers and other artists, West, 30s.; other parts, 15s. Reception-room duties, 15s. and 10s. respectively; carbon printers, 30s.; monochrome artists, 40s.; photo-processes (operators, printers, etchers, photo-litho artists), 40s.; re touching, redrawing, opening-up, &c., 35s. Special arrange ments for piece workers and workers in season towns. Mem bership restricted to workers under 40. The above figures are subject to early amendment. Our work cannot be carried on without expenses, and the primary expenses will be the heaviest. Therefore we trust the neces sary monetary aid will be forthcoming from all who have any interest in the new departure. All donations to be sent direct to H. Snowden Ward, treasurer, Bradford, Yorkshire. We need hardly repeat the urgency of this question. How ever sure one may feel of the permanency of situation, yet unexpectedly it often happens that one is thrown suddenly into a helpless position—helpless because isolateil. To prevent this we have started this movement for unity and mutual help. Let “Organisation” be the watchword of our disunited workers; let “Moderation” be our policy, and “Defence, not Defiance,” our motto.—T. Bolas, Chiswick {President) ; H. Snowden Ward, Bradford {Treas. and See. for Bradford). Committee (London)—W. Goebelhoff, G. J. Nield, Napier, Krauss, Phillips, Forbes. Hon. Secretaries — G. Nield, 44, Englefield Road, London, N. ; F. Mann, 175, Malpas Road, Brockley, S.E. ; C. Harrap, 8, Victoria Road, Plymouth Grove, Manchester; Arthur M. Henderson, 42, Frederick Street, Edinburgh. All information from Arthur Field, General Hon. Sec., Maidstone. PHOTOGRAPHY AND ILLUSTRATED JOURNALISM. Sir,—The very interesting article on page 84 of your last issue entitled, “ Photography and Illustrated Journalism ” concludes with this sentence : “ Mr. Russell Scott described a newly invented method of producing pictures of various colours at a rapid rate with one impression from a single lithographic stone or Uock." The italics are my own, as these few words seem to point to the solution of a problem that chromo-litho graphers so far have completely failed to solve, and foreshadows a revolution in the cost and rapidity at which coloured repro ductions can be turned out. If Mr. Russell Scott could be induced to give some farther particulars concerning this inven tion, they would, I think, be highly appreciated by those of your readers who, like myself, take an interest in all process work, and to the very large number who find that the photo graphic work connected therewith adds considerably to their income. M. P. Fehtuary ith, 1891. The Exhibition of the Manchester Photographic Society will open next Monday. To-night Lord Rayleigh will lecture at the Royal Institution on “ Some Applications of Photography.” .. Various correspondents are constantly sending us news paper cuttings about the doings of those photographers who advertise «portraits for nothing,” and then get something for them under the guise of charging for the frames. As all photographers have heard of the humbug, our correspon dents had better send the paragraphs to local newspapers which have not already printed the particulars. Pyrocatechin.—The recent decrease in the price of pyro catechin is bringing it into prominence as a developing agent. The formula below is simple, and is said to produce excellent negatives:— Pyrocatechin ... ... ... ... 1 gramme Carbonate of potash ... ... ... 10 ,, Distilled water ... ... ... 60 to 70 c.c. Another Discovery in Photography.—An interesting dis covery has been made by Herr Dombeznfki, of the Lemberg Polytechnic Academy, Vienna, by which the area of the use fulness of photography is still farther extended. The pro fessor, who has made a report to the Vienna Academy of Sciences, says that he has succeeded in obtaining photographic effects by electro-magnetic undulations, and explains the means he has employed.— Photographic Times, QProreedngs Of Socettes. London and Provincial Photographic Association. January 29th.—Mr. A. Haddon in the chair. Mr. W. E. Debenham presented to the library a work on the Autotype process. Mr. CHARTERS-WHITE read a paper on “Photo-Micrography ” (see page 102). Mr. J. J. BRIGINSHaW said that in order to facilitate the adjust ment of objectives to the object to be photographed, he had devised a turn-table, which carried the microscope. He had found it a very convenient arrangement in practice. Mr. T. E. Freshwater exhibited a lantern attachment, the use of which dispensed with the ordinary microscope. A re volving diaphragm plate rendered the light quite under the control of the operator. He also passed round Mr. Pringle’s work on the subject. The Chairman, in reply to questions, said that he did not re commend the use of the eye-piece ; it restricted the field. With regard to the bull’s-eye condenser, in his hands it had proved a very useful accessory. He had tried a yellow screen, but did not find any material gain from its use. For focussing he used a piece of plain glass with lines ruled across it with a diamond. Mr. J. J. BRIGINSHAW said that the ordinary ground glass screen was of no use whatever for fine work. A very good screen could he made by simply flashing a gelatine plate to light, and developing it. A series of micrographs was then projected on the screen with the optical lantern, the work principally of Mr. Guardia and Mr. T. E. Freshwater. The Sheffield Photographic Society. The ordinary monthly meeting was held at the Cutlers’ Hall on February 3rd, Mr. B. J. Taylor in the chair. After the election of new members, a lantern exhibition was given, consisting of 180 slides, which had been awarded medals in their several classes in a recent competition. The Sheffield Camera Club. The annual meeting was held on January 28th in the Club’s rooms, New Surrey Street. The Secretary’s report for the past year was satisfactory. The following were elected as officers for the ensuing year :— President—Mr. G. T. Newsholme ; Vice-Presidents—Dr. T. H. Morton and Mr. H. J. Rawson ; Hon. Secretary—Mr. G. E. Maleham ; Treasurer—Mr. B. W. Winder ; Council—Prof. J. O. Arnold, Drs. J. A. Munton and E. S. Rumio, Messrs. Wm. Gilley, jun., A. Copley, and P. Slater. The Tooting Camera Club. At the meeting held on the 27th January, with the President in the chair, the time was devoted to lantern slide making by Mr. J. F. Child. The next ordinary meeting will be held on the 24th Feb ruary, when Mr. Berger will demonstrate pyro development. The Birmingham Photographic Society. A meeting was held at the club rooms, Colonnade Hotel, on January 29th, Mr. W. J. Harrison in the chair. Eight new members were elected. The exhibits of the evening were Hulm’s cantilever enlarging apparatus, which was admired both for excellence of workman ship and portability, and two permanent photographs burnt into porcelain, which were shown by the Chairman. Neither of the latter appeared to have suffered by the burning-in pro cess they had undergone. The evening was then devoted to a developing competition and demonstration. Plates were first exposed behind negatives in the room, and then developed with pyro and ammonia, by Mr. J. T. Monsley ; pyro and potash, by Mr. J. Simkin ; hydroquinone, by Mr. G. A. Thomason ; eikonogen, by Mr. A. J. Leeson ; “Demon,” by Mr. J, W, Pickard ; ferrous oxalate, by Mr. W. J. Harrison.
