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The photographic news
- Bandzählung
- 6.1862
- Erscheinungsdatum
- 1862
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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. 197, June 13, 1862
- Digitalisat
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Zeitschrift
The photographic news
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Band 6.1862
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- Ausgabe Ausgabe 73
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- Register Index 619
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Band 6.1862
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1862. I JUNE 13, 1862.] THE PHOTOGRAPHIC NEWS. 285 I i extrudd I 10 cyanide tho’ same umber: is er smallet nor ponch y from tbe ven by the t was only t was ota per part d vas a wel .ide, shor. t like th? iged to the If. Many parts, bd o a sortA vered wil solved inb) sorter at re straig. • barbed st of terri* daws w labia a largerM: of the is' ; short To Ihadp is, &c., tempt I to adrab” he strtW irated C M talsbyt rv, we 1 ntbrin^ ome of ly to ba s to fura may S salt car ; i ourse. lvesbisj Arach. rate bet, I the stl tingl ore of 1 pr5‘ PER. fid in a high degree, the following method, by which the albumen surface is preserved entire, the tone is a rich purple black, all mealiness or snowiness avoided, and uniformity of action maintained. Silver Bath. 4. Dissolve one ounce of nitrate of silver in six ounces of rain water ; of this solution take two ounces, and add ammo nia until the precipitate is dissolved ; afterwards mix these with the remaining four ounces. Now add four drachms of alcohol and allow the oxide of silver to settle. If any particles still swim on the solution, remove them by draw ing a small sheet of paper two or three times over the sur face. It is not necessary—it is even injurious—to filter the solution ; for the sediment is oxide of silver, which is afterwards dissolved by the addition of ammonia. The paper, already cut and prepared according to art, is made to float on the silver for about ten seconds ; all bubbles and particles that may adhere are carefully removed from its surface, and afterwards it is dried in the usual manner. Every time this bath of silver is again used fresh crystals of the nitrate are added together with a few drops of ammonia and about one drachm of alcohol. Tailing. 5. The prints are first well washed in several waters ; this operation may be performed in ten minutes or a quarter of an hour; if the time is much longer the tone is impaired. They are then passed through hot water previously to their immersion in the toning solution. This solution is formed as follows:—From the stock bottle containing one part citrate of soda and six parts water, take two ounces ; to this add one pint of warm water, one ounce of rain water, hold ing in solution one grain of chloride of gold, or more, according to the number of prints to be toned, and two drachms of alcohol. The toning soon commences, and is soon finished if the gold is in sufficient quantity. The temperature must be preserved at a blood heat, or about 100° Fah. ; if it were greater the gold would become decomposed, and the solution blackened instead of the prints ; if lower, the time of operation will be prolonged, and the operation itself tedious. The alcohol in this solution prevents all action of the alkali on the albumen, whereby the vigour of the print is preserved. I do not use the same bath twice unless immediately, and then of course with the addition of ■Bore gold. After the toning is finished, any gold that may Temain is reduced by sulphate of the protoxide of iron, and collected. Fixing. , 6, The fixing medium consists of the ordinary solution of hyposulphite of soda. Every time I use this bath I add fesh crystals of the salt, two drachms of alcohol and an ’Once or two of warm water, so as to raise the temperature. The prints, previous to their immersion in this bath, are Again passed through warm water. The colour of the prints is not much changed when they are introduced, or if slightly changed, they soon regain their original and final lone. In two or three minutes the prints will be sufficiently acted upon by the hyposulphite, and are then removed into the water bath and thoroughly washed. The material point in these operations is the use of alcohol in each sub-division; because upon this re-agent success depends. Carbonate of soda may be used instead of citrate in the toning solution ; the tone, however, is a richer purple black with the latter than with the former. I would finally remark that unless the negative be properly and successfully taken with due contrast of light and shade, and without a universal fogginess over the whole surface, deep purples or blacks can never be obtained by any process ; the silver salt has to be thoroughly acted upon by light in order to receive the desired toning. ANNUAL REPORT OF THE SOUTH LONDON PHOTOGRAPHIC SOCIETY. At the conclusion of this, the third year of its existence, your Committee have much pleasure in assuring you of the satisfactory and promising aspect of the Society’s affairs. At our last three or four meetings we elected sixteen new members, many of whom have already displayed the most laudable activity in forwarding the interests of the Society. At no one of our pleasant monthly meetings have we lacked either an interesting and useful paper, or the elements necessary for originating an animated discussion, and our Treasurer’s account will show that—despite unusually heavy expenses, we have, for the first time, a balance in our favour. The papers read were as follows :— ( Photography at the International Oct. 10. ■< Exhibition of 1862 ... ... C. J. Hughes, v.p. ( On the Photogenic Action of Colour Thomas Clarke. Nov. 14. On Mounting Photographs ... G.W. Simpson, v.p. Dec. 12. A Prologue for the Season ... V. Blanchard. Jan. 9. On Mealiness in Toning... ... S. Fry. Feb. 21. On tho Manufacture of Collodion S. Davis, v. p. March 13. The Experiences of an Amateur in Portraiture ... ... ... N. E. Fitch. April 10. Ou Photographic Reproductions... A. H.Wall, hon. sec. May 8. On tho Use of Bromides in Collo ¬ dion ... . . V. Blanchard. The Committee take this opportunity of thanking the authors of the above for their generous labour in the Society’s behalf. It is hoped that the useful little papers which were first introduced to our meetings by Mr. Hannaford, under the title of “ Photographic Jottings,” will not be entirely absent from our next year’s list of papers as they are from the above. The society has another source of gratification in the suc cessfully organized Exhibition at the Sydenham Crystal Palace, which, it is hoped, will be the first of a series of annual exhibitions, each at least equalling it in the number of contributors and in the quality of the contributions; for it should not be forgotten that painting, sculpture, engrav ing, and other branches of fine art, all date their prosperity and influence from the establishment of periodical exhibi tions. The present exhibition of this Society has been brought to its very satisfactory position mainly by the un tiring energy of the Exhibition Sub-committee, to the members forming which, and to the Secretary of the Society who assisted them, the best thanks of the Committee are very gratefully awarded. The Committee also desire to express their thanks to those gentlemen, friends aud members of the Society, who have kindly contributed to the folio during the past year. Special thanks are also due to Mr. Samuel Fry, Mr. C. J. Hughes, and Mr. J. J. Cole, to whose kindness the Society is indebted for the gratuitous use of apartments in which the Committee and Sub-committee have held somewhat frequent meetings. Availing themselves of the present opportunity, the Com mittee also desire to thank the exhibitors whoso productions are now at the Society’s Exhibition. Among the few sources of regret which have arisen during the past season have been the retirement from an active participation in the proceedings of the Society—in conse quence of a change of residence—of our Vice-President, Mr. Hughes; and that of one of the most active members of the Experimental Sub-committee, Mr. Hannaford. We have another source of such feeling in the fact of our Secretary and Treasurer having tendered their resignations. The Society owes its existence primarily to the efforts of these gentlemen, and having now held oflice for three years, their retirement cannot but prove a source of regret to the members gene rally. It is part of this evening’s business therefore to elect their successors. In reviewing, as is usual, the progress of photography during the past year, we find such progress chiefly made palpable in an artistic direction. No new scientific facts of
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