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The photographic news
- Bandzählung
- 27.1883
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- 1883
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- Hochschule für Grafik und Buchkunst Leipzig
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The photographic news
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Band
Band 27.1883
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- Titelblatt Titelblatt I
- Register Index III
- Ausgabe No. 1270, January 5, 1883 1
- Ausgabe No. 1271, January 12, 1883 17
- Ausgabe No. 1272, January 19, 1883 33
- Ausgabe No. 1273, January 26, 1883 49
- Ausgabe No. 1274, February 2, 1883 65
- Ausgabe No. 1275, February 9, 1883 81
- Ausgabe No. 1276, February 16, 1883 97
- Ausgabe No. 1277, February 23, 1883 113
- Ausgabe No. 1278, March 2, 1883 129
- Ausgabe No. 1279, March 9, 1883 145
- Ausgabe No. 1280, March 16, 1883 161
- Ausgabe No. 1281, March 22, 1883 177
- Ausgabe No. 1282, March 30, 1883 193
- Ausgabe No. 1283, April 6, 1883 209
- Ausgabe No. 1284, April 13, 1883 225
- Ausgabe No. 1285, April 20, 1883 241
- Ausgabe No. 1286, April 27, 1883 257
- Ausgabe No. 1287, May 4, 1883 273
- Ausgabe No. 1288, May 11, 1883 289
- Ausgabe No. 1289, May 18, 1883 305
- Ausgabe No. 1290, May 25, 1883 321
- Ausgabe No. 1291, June 1, 1883 337
- Ausgabe No. 1292, June 8, 1883 353
- Ausgabe No. 1293, June 15, 1883 369
- Ausgabe No. 1294, June 22, 1883 385
- Ausgabe No. 1295, June 29, 1883 401
- Ausgabe No. 1296, July 6, 1883 417
- Ausgabe No. 1297, July 13, 1883 433
- Ausgabe No. 1298, July 20, 1883 449
- Ausgabe No. 1299, July 27, 1883 465
- Ausgabe No. 1300, August 3, 1883 481
- Ausgabe No. 1301, August 10, 1883 497
- Ausgabe No. 1302, August 17, 1883 513
- Ausgabe No. 1303, August 24, 1883 529
- Ausgabe No. 1304, August 31, 1883 545
- Ausgabe No. 1305, September 7, 1883 561
- Ausgabe No. 1306, September 14, 1883 577
- Ausgabe No. 1307, September 21, 1883 593
- Ausgabe No. 1308, September 28, 1883 609
- Ausgabe No. 1309, October 5, 1883 625
- Ausgabe No. 1310, October 12, 1883 641
- Ausgabe No. 1311, October 19, 1883 657
- Ausgabe No. 1312, October 26, 1883 673
- Ausgabe No. 1313, November 2, 1883 689
- Ausgabe No. 1314, November 9, 1883 705
- Ausgabe No. 1315, November 16, 1883 721
- Ausgabe No. 1316, November 23, 1883 737
- Ausgabe No. 1317, November 30, 1883 753
- Ausgabe No. 1318, December 7, 1883 769
- Ausgabe No. 1319, December 14, 1883 785
- Ausgabe No. 1320, December 21, 1883 801
- Ausgabe No. 1321, December 28, 1883 817
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43 THE PHOTOGRAPHIC NEWS. [JANTARY 19, 1883. ■was done, and the Standard speaks in high terms of the elegant card placed upon the plate of every guest. “ The menu was adorned with Stanley’s photograph,” we are told, " and was in itself an artistic bijou.” So says the Picture and Art Trade ; but the paper does not say that it is one of our “ Notes ” it is quoting. Siemens’s Selenium Photometer.—The following is a descrip tion of this apparatus as constructed by Messrs. Siemens and Halske, of Berlin :—A horizontal copper tube, three centimetres in diameter and fifteen centimetres long, is mounted on a stand fixed at one end of a horizontal graduated bar. The stand, with the copper tube attached, is movable above a vertical axis, and is provided with a levelling screw. One end of the tube is fitted with a metal diaphragm having a circular aperture in its centre, and the other with a mounting carrying cross wires. This latter can be removed and replaced by a short horn box containing a plate of selenium specially prepared. The plate is protected from the light by a valve, which can be opened by a button outside the tube. At two opposite points of the plate wires are attached, which connect it through a galvanometer to the battery. A Thomson portable mirror galvanometer is the best. To take observations, the tube is turned towards the light to be measured, which is then centred by means of the cross wires. The diaphragm and the mounting carrying the cross wires are removed, and the latter replaced by the selenium plate. The circuit is completed, and the plate exposed to the light. After reading the deflection of the galvanometer the tube is turned about its vertical axis until it is in line with the graduated rod. A standard candle slides on the rod, and its distance from the plate is adjusted until the galvanometer deflec tion is the same as before, The intensity of the lights is then proportional to the squares of their respective distances from the plate.—Electric Light. Instantaneous Photograph of an Elephant.—The Scientific American of Jan. 6 contains a copy from La Nature of an instantaneou s photograph taken in the great rotunda of the Museum of Natural History, of Paris, which gives shelter to the large mammifer. The animal (an elephant) was taken just as he was in the act of opening his mouth to receive a piece of bread that his keeper was about to throw to him. The picture also represents the reservoir for water that runs round the rotunda, and the external wall of the latter. Photographs of the Carbon Spectrum.—Liveing and Dewar find that when the spectrum of an induction spark, passing between graphite poles, is photographed, that the wave lengths of the principal lines were as follow :—2296-5 ; 2478'3 ; 2509 ; 2511'9 ; 2836'3 ; and 2837'2. A Rutherford grating was used, and it is interesting to note that the characteristic flutings of cyanogen were visible in the photogragh if the spark was allowed to pass through air ; but when carbonic anhydride replaced the air, these flutings did not appear. A Swan lamp gave a continuous spectrum until the thread gave way, when indications of the presence of carbonic became noticeable. GREASE-PROor and Water-proof Paper.—By treating “ parchment ” or “ Gaine’s" paper—as it is sometimes called from the name of its inventor—with a little hot, strong solution of gelatine, to which about 2} or 3 per cent, of glycerine has been added, and allowing it to dry, it may be rendered tolerably impervious to fatty matters, so that it then forms a convenient medium in which to pack small quantities of such substances as ordinarily are apt to " grease the paper " they are wrapped in. The same altered variety of cellulose, if soaked with benzole, or bisulphide of carbon holding one per cent, of 01. Lini and four of India-rubber in solution, makes, when dry, an admirable and inexpensive waterproof envelope for the preservation and transport of drugs and deliquescent salts. By using an envelope of this description, and when filled closing it carefully with a little stronger solution of caoutchouc, and afterwards placing the same inside a similar one of larger size containing fine, oven- dried oatmeal, even chloride of calcium and crystals of nitrate of ammonium have been forwarded in damp weather, without their having attracted moisture or suffered any appreci able change during transit.—Eurgoyne's llonthly JLagaiine of Pharmacy. PHOTOGRAPHS REGISTERED. Mr. Berry (Aberdare) —2 Photos of Nellie Berry and Mary Rees in a Basket; 4 Photos, of Sydney Joseph Berry. Mr. J. Thompson (Landport)—Photo, of Review of Troops from Egypt. Mr. L. YeansY (Buckingham)—Photo, of Hunt Meet at Stove House. o Gorresgondents. *,* We cannot undertake to return rejected communications. Contributors’ Copies of Ybar-Book.—There are several contributors to our Year-Book who have not yet received copies, owing to the circumstance that we have not their addresses. The publishers will be glad to hear of any omission of this nature, in order that it may be rectified as soon as possible. The demand upon our space is so great that we are reluctantly compelled to defer Lesson I. of “ TWELVE Elementary Lessons on Sensitizing, Printing, etc.,” till next week. We are also, for the same reason, obliged to hold over "By- the-Bye.” Captain Abney’s paper published last week was in error attributed to the Edinburgh Society, instead of that of Great Britain. Otto PFENNIGER.—See “Notes” in Photographic News of September 1st, 1882. “A Member of the Photographic Society.”—We shall be glad to print your letter on the “ Council Election,” if you will give us authority to append your name to it. M. K.—If you follow the instructions in the work sent, you should experience no difficulty; but write again in case of any failure. J. S. Milner.—Thanks. As you will see, we have acted upon your suggestion. Pawson and Brailsford.—Major Waterhouse’s papers, now appearing in the Photographic News, will, when complete, contain a full account of all the latest and practical details, forming a comprehensive treatise on modern photo-lithography. Max Gregor.—1. We think not. 2. Probably not such good pay as in this country, when the increased cost of living is taken into account. F. E. P.—1. Send us specimens, and we will try to suggest the cause. 2. No; under the circumstances you are likely to do better in this country. Subscriber (Falmouth).—The picture is first rubbed over with a very small quantity of the so-called encaustic paste (see Formulary), and is then passed thiough a burnisher; this I apparatus consisting of an arrangement by which a burnished steel rule is made to work to and fro on the face of the print. Inquirer.—1. If we were going to do the work ourselves, we should prefer to use wet plates ; still, if you really wish to use emulsion, it is desirable to prepare it with a good excess of bromide, and to use it without emulsification. 2. The practical details will come after the theory. W. Byrne and Co.—We imagine the mischief to arise from the mounts, as we have had numerous complaints regarding pictures attached to cards which appear to be of similar make and quality. If our conjecture can be proved to be true, you have, of course, a legal remedy. Auld Reekie.—1. There is no difficulty as regards the manipula tion ; the most transparent pigments being mixed with crystal paper varnish, and applied to the back of the picture. 2. Pro bably not, but many aniline colours will bear incorporation with the crystal varnish. These colours generally fade if exposed to the prolonged action of daylight, but are sufficiently permanent for your purpose. Constant Reader.—You would do well to replace it by one in which the prevailing tint is blue, and before putting on the fresh paper take care to remove the old. J. Mack.—The ordinary methods of photo-engraving are applic able, and you will find numerous notices in our back volumes. J. Hampton.—Soak the negative in a weak solution of potassium cyanide, say, about five grains to the ounce. Lyons.—Hot sulphuric acid instantly destroys it, carbon being liberated. H. Spink.—We fear that although many can be found who will readily undertake to supply what you require, the results will fall short of the promises. Samuel Lampeter.—When pure, it is quite neutral to test paper, but it possesses, like many neutral salts, the property of dissolving the oxide of its metal, and becoming slightly alka line. 2. Provided that air be excluded. Craven Street.—The red colour indicates that oxygen has been absorbed, and that some of the iron has been converted into a ferric salt. When the oxidation is complet e, the developer is useless ; but when partial, the developer is simply weakened. C. J. T.—1. It is quite impossible to judge without seeing speci mens. 2. Send them back. If a material is supplied for a definite purpose, and it proves unfit for that purpose, the vendor is responsible for all losses which may result. . 1 L. Porter.—1. The tannin serves to render it partially insoluble i but care is required not to add too much. 2. At a temperature of about 70° Centigrade. 3. No. 4. No. 1 gives an extremely curved field; but the case is altogether different with No. 2.
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