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The photographic news
- Bandzählung
- 29.1885
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- 1885
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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. 1384, March 13, 1885
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The photographic news
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Band 29.1885
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- Register Index III
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The meeting discussed various methods for improving the Association, and decided to issue a circular-letter to the photo graphic fraternity (see page 176). The meeting then terminated. LoxDox and PROVIXCIAL PHOTOGRAPITIC Association. At the usual weekly meeting of this Society, held on Thursday, the 5th inst., Mr. W. H. Hyslop occupied the chair. Messrs. Morgan and Kidd gave a demonstration of the work ing and development of their new contact paper. Mr. Archer Clarke showed some crystals of ferric oxalate that had been precipitated from a ferrous-oxalate developer. After this solution had been mixed with another chemical not mentioned, Mr. Clarke stated that this developer, as prepared, could be used day after day. He promised a paper on the sub ject shortly. Mr. J. B. Wellington showed his combination carrier and dissolver for a single lantern. The dissolver was fixed in front of the lens, and consisted of two pieces of ebonite, which, by working vertically, opened and closed a diamond-shaped dia phragm. The pieces of ebonite were put in motion by a wheel at the top of the dissolver, communicated by a telescope rod with a strip of wood, working horizontally along the top of the carrier. A short length of brass cogs on the top of this strip of wood fitted into the cogs of a small wheel at the end of the telescope rod mentioned. The action of pushing a slide into its place caused the small wheel to revolve just enough to close the dia phragm, the return of the sliding strip opening the diaphragm, and showing the fresh picture; the displaced slide travelled to the opposite end of the carrier. Mr. J. Barker gave a formula of chloride paper for printing out:— Gelatine (Nelson’s and Coignet’s, equal parts) 175 grains Chloride amm ... 18 „ Rochelle salts ... 50 „ Nitrate of silver 75 „ Methylated alcohol 2 drachms Water 5 ounces Dissolve the salts in the water, then add the gelatine ; after this has soaked, apply heat and melt, raise the temperature to about 100% Fah., and add the silver. Keep the emulsion at the same temperature for ten minutes before adding the alcohol; the emulsion can now be poured out to set. A very slight washing only is needed, or it can be used without washing if preferred. Referring to the subject of coating concave mirrors with platinum for microscopical and astronomical purposes, brought up at a former meeting, Mr. Charles Darker handed to the Chairman a sheet of glass coated with a film of platinum ; at the request of the members he read a communication on the subject that he had received from Professor Ralph Biittger (see page 170). Glasgow and West of Scotland Amateur Photographic Association. The eighth general meeting of the above Association was held on the Sth inst., Mr. Archibald Robertson (President) in the chair. After the routine business was gone through, Mr. Wm. Lang, Junr., read a paper on “Ferrous Tartrate as a Developer for ‘ Rapid ’ Paper’’ (see page 169). Mr. John Urie read a paper on the Daguerreotype process, which gave great satisfaction to the young members; he deve loped several plates. Mr. John Urie, Junr., exhibited his new patent automatic printing machine. Coventry and Midland Photographic Society. The usual monthly meeting of this Society was held at the residence of Mr. F. J. Lloyd, on Tuesday, 3rd March, 1885, Mr. Councillor Andrew, President, in the chair. The minutes of the three previous meetings were read and confirmed. It was resolved, after some discussion, that “ In future the Society have a fixed place of meeting, instead of their present arrangement of meeting at members’ homes, and that it be left in the hands of the Managing Committee to procure a room for that purpose.” Mr. T. Willdigg was duly elected a member of the Society. Mr. Henry Hughes then gave a demonstration with “ rapid chloride paper.” He then proceeded to make the exposures with a fan gas jet, the negatives being landscapes and portraiture of varying density ; the exposures were 25, 30, 35, 40, and 50 seconds, and owing to the light being weak, some of the land scapes were slightly under-exposed. The prints were then deve loped with oxalate, iron and bromide as a restrainer, and should have been up fully in three, but took from four to seven minutes; they were then soaked in alum for five minutes, washed and toned in a chloride of lime bath—1J grains of gold to the pint. He said he found this act very rapidly ; the colour was told by letting in a little white light, and looking through the prints, a little light not affecting them at this stage. It was of no use trying to tone prints that were over-developed, as they lost the power to tone after being in the developer more than three minutes. The only way it seemed to affect the print was to clear the white ; under exposure and over-development left them with a cold greenish hue. He thought it would, be better to slightly over-expose, and check in development. He was, however, experimenting with an accelerator which he hoped would be useful in under-exposure. The prints were then fixed in a solution of 5 ounces of hypo to 20 of water, five minutes being found sufficient. North Staffordshire Amateur PHOTOGTAPHIC Association. The ordinary monthly meeting was held on Thursday, March 4th, Mr. C. Alfieri, President, in the chair. Communications and letters were read from the Editor of Anthony’s Photographic Bulletin ; the Secretary of the Versailles Photographic Society; Dundee Association; and Glasgow Amateur Association. Mr. B. S. Burgess exhibited a Plucker's telescopic stand. Mr. Allison exhibited a superior half-plate set of apparatus, also an amateur set of excellent workmanship, by C. E. Elliott. The President showed some instantaneous shutters of his own manu facture, made expressly to work with Grubb’s lenses. It was resolved that ladies be admitted as members on pay ment of half the usual fee for gentlemen. Mrs. W. B. Allison and Mr. L. Kelsall were elected members. Bradford Amateur PHOTOGRAPMIC Society. The monthly meeting was hell on Thursday last, at the Law Institute, Mr. Duncan G. Law (the President) in the chair, a large number of members being present. The minutes of the previous meeting were read and con firmed. In connection with the Prize Competition in the autumn, it was proposed that the number of exhibits should be limited to three in each class ; the prizes to be in apparatus ; and that a charge of one shilling entrance fee be made to each exhibitor to cover expenses. Mr. W. H. Foster, of Hornby Castle, was elected a member. Mr. G. D. Scoxal (the Hon. Secretary) then exhibited a number of lantern transparencies by means of the oxyhydrogen lantern ; the first being a series of twenty-one views of Savoy from negatives by the president, the slides biing made on wet collodion. The Secretary also showed thirty-six views of Yorkshire, also on wet plates. Good slides by other members were shown, by the collodio- albumen and other dry processes, but the opinion of the meeting was that those by the wet process were superior in brilliancy. Dundee and East of Scotland PHOTOGTAPHIC Association. A meeting of this Society was held on March 5th, in Lamb’s Hotel, when there was good attendance. Mr. W. D. Valentine presided After the routine business was disposed of, Dr. J. K. Tulloch read a very interesting paper on “ Art in Photography ” (seo page 166). A hearty vote of thanks was awarded to Dr. Tulloch, and a lively discussion ensued as to whether photography was en titled to rank as a fine art or not. St. Helen’s Association of Science, Literature, and Art, Photographic Section. A meeting was held 25th ult. at the Association Rooms, 4, Salisbury Street, Mr. Councillor R. G. Brook in the chair. The Secretary read a letter from the Dundee Photographic Association, announcing an Exhibition early next year. Mr. Thomason showed his new half-plate camera, which was
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