Suche löschen...
The photographic news
- Bandzählung
- 29.1885
- Erscheinungsdatum
- 1885
- Sprache
- Englisch
- Signatur
- F 135
- Vorlage
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- SLUB Dresden
- Lizenz-/Rechtehinweis
- Public Domain Mark 1.0
- URN
- urn:nbn:de:bsz:14-db-id1780948042-188500006
- PURL
- http://digital.slub-dresden.de/id1780948042-18850000
- OAI-Identifier
- oai:de:slub-dresden:db:id-1780948042-18850000
- Sammlungen
- Fotografie
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
- Bemerkung
- Seite I-II fehlen in der Vorlage. Paginierfehler: Seite 160 als Seite 144 gezählt.
- Strukturtyp
- Band
- Parlamentsperiode
- -
- Wahlperiode
- -
- Bandzählung
- No. 1379, February 6, 1885
- Digitalisat
- SLUB Dresden
- Strukturtyp
- Ausgabe
- Parlamentsperiode
- -
- Wahlperiode
- -
-
Zeitschrift
The photographic news
-
Band
Band 29.1885
-
- Register Index III
- Ausgabe Ausgabe 1
- Ausgabe Ausgabe 17
- Ausgabe Ausgabe 33
- Ausgabe Ausgabe 49
- Ausgabe Ausgabe 65
- Ausgabe Ausgabe 81
- Ausgabe Ausgabe 97
- Ausgabe Ausgabe 113
- Ausgabe Ausgabe 129
- Ausgabe Ausgabe 145
- Ausgabe Ausgabe 161
- Ausgabe Ausgabe 177
- Ausgabe Ausgabe 193
- Ausgabe Ausgabe 209
- Ausgabe Ausgabe 225
- Ausgabe Ausgabe 241
- Ausgabe Ausgabe 257
- Ausgabe Ausgabe 273
- Ausgabe Ausgabe 289
- Ausgabe Ausgabe 305
- Ausgabe Ausgabe 321
- Ausgabe Ausgabe 337
- Ausgabe Ausgabe 353
- Ausgabe Ausgabe 369
- Ausgabe Ausgabe 385
- Ausgabe Ausgabe 401
- Ausgabe Ausgabe 417
- Ausgabe Ausgabe 433
- Ausgabe Ausgabe 449
- Ausgabe Ausgabe 465
- Ausgabe Ausgabe 481
- Ausgabe Ausgabe 497
- Ausgabe Ausgabe 513
- Ausgabe Ausgabe 529
- Ausgabe Ausgabe 545
- Ausgabe Ausgabe 561
- Ausgabe Ausgabe 577
- Ausgabe Ausgabe 593
- Ausgabe Ausgabe 609
- Ausgabe Ausgabe 625
- Ausgabe Ausgabe 641
- Ausgabe Ausgabe 657
- Ausgabe Ausgabe 673
- Ausgabe Ausgabe 689
- Ausgabe Ausgabe 705
- Ausgabe Ausgabe 721
- Ausgabe Ausgabe 737
- Ausgabe Ausgabe 753
- Ausgabe Ausgabe 769
- Ausgabe Ausgabe 785
- Ausgabe Ausgabe 801
- Ausgabe Ausgabe 817
-
Band
Band 29.1885
-
- Titel
- The photographic news
- Autor
- Links
- Downloads
- Einzelseite als Bild herunterladen (JPG)
-
Volltext Seite (XML)
96 THE PHOTOGRAPHIC NEWS. LFEBRTARY 6, 1885. Portraits of Colonel Burnaby.—At least two photographs of this gentleman have been produced, and have been brought into prominence by his recent melancholy death : an excellent cabinet by Mr. Fall, of Baker Street, which shows the Colonel in full regimentals, and with his characteristic smile admirably caught by the camera ; also a carte portrait by Mr. Thomas Donovan, of St. James Street, Brighton. Proposed Copyright in Architectural Designs.—The Vossisch e Zeitung makes the impracticable proposal to vest the right of selling photographs of a new building in the architect; the protection to hold good for three years. If this were the case, a photographer taking a street view in a new neighbour hood might have several hundred actions at law brought against him. Death of M. F. Joubert.—Although the reputation of M. Joubert rests principally on his skill as a line engraver, his name will be also remembered in connection with photography. He patented (1860, No. 149), and worked commercially a method of making enamel photographs by what is termed the dusting- on process, and in 1862 he read a paper on the subject before the Photographic Society of Great Britain (see Photographic News, 1862, p. 125.) He was probably the first to work the Collotype process commercially in this country, and it may be mentioned that the well known process of coating engraved plates with steel is due to him. The Chemistry of Silver Compounds.—J. M. Cabell has made four experiments in which very carefully cleaned pure silver was exposed under certain varying conditions to a current of pure hydrogen sulphide (sulphuretted hydrogen), which was first carefully dried. The results tend to show that, in absence of water, hydrogen sulphide does not act on silver at the ordinary temperature. J. D. Bruce finds that when dilute solutions of silver nitrate and potassium hydroxide, in 90 per cent, alcohol, are mixed at the ordinary temperature, in quantities containing equivalent amounts of the two substances (AgNO, and KHO), the usual granular brown precipitate of silver oxide is formed. When, however, the mixing is effected at very low temperatures, the precipitate which forms is flocculent, and has less and less colcur as the temperature is lowered, until, at about —50“ F., the precipitate is almost white. This white precipitate soon becomes coloured, and, at —40° F. is already pale brown. The white precipitate is presumably silver hydroxide (silver hydrate), and is slightly soluble in water.--Journal of the Chemical Society. How Not to Make Chloride of Gold.—Let not the amateur photographer attempt to make chloride of gold from the attractive looking jewellery formed of what in trade is known as “ rolled gold,” as he will be disappointed in the results. Rolled gold is thus manufactured. An ingot of brass is cast, and while it is yet hot a thin layer of gold alloy is poured upon it. When the ingot thus covered becomes cold it is forced between steel rollers until a long thin ribbon is produced, of which the pro portion of gold and brass is, of course, the same as that of the ingot. The percentage of gold is often reduced very low— sometimes to 2 and 3 per cent. This rolled gold in cheap brace lets and watch chains lasts for ten years.—Photographic Times. Influence of the Light of the Sun on the Germs of Microbia—E. Duclaux.—The author’s results show that the light of the sun is a hygienic agent of great power, being at least fifty times more, efficacious than its heat in destroying mis chievous germs.—Chemical News. The MOoNITOGRAPH.—The camera obscura as an aid to the artist in tracing the outlines of a view is almost a thing of the past, it being so much more satisfactory to allow the image to impress itself on a sensitive plate. Notwithstanding this, La Nature gives a drawing and description of an ingenious device which shows the image non-reversed and upright on the ground glass screen, so that a sheet of tracing-paper can be laid over the glass and the pencil be immediately brought into use. The apparatus—which is called the Monitograph, and is the invention of M. Mallen—is provided with two reversing pinions behind the lens. Photographic Club.—-The subject for discussion at the next meeting, on Wednesday, Feb. 11, will be “On the Working Capabilities of Cheap Lenses. Uo Uortespondents. *,* We cannot undertake to return rejected communications. W. Wheeler.—We are sorry that there is no alternative but to leave it over till next week, ‘ K. K.—1. Mix solutions of nitrate of silver and oxalate of ammonia, collect the precipitate on a filter, and dry it in the dark-room. If the nitrate of silver is in excess, the precipitate will be far more sensitive than if the oxalate of ammonia is in excess; but in the latter case the material keeps better. The best way of drying is to scrape the wet oxalate off the filter, to spread it on a clean dinner plate, and to place this over a saucepan of hot water. Oxa late of silver has been known to explode when strongly heated, but drying as above suggested is quite safe. 2. There is no ad vantage in using the ammonia. Thos. Stokoe.—Your snow scenes are excellent, especially that showing the reflections of the trees in the brook. R. U. Poulter.—Write to Mr. W. Cobb, Wellington Street, Woolwich. Photographer.—1. A patent is granted for a new process or in vention, but copyright can only be secured in relation to literary or artistic work. 2. The registration of a design only protects the general configuration, and in no way protects the working parts of an apparatus. It is impossible to judge as to whether your arrangement can be protected by mere registration, unless we know more about it; but under any circumstances it would be well to take the opinion of an experienced patent-agent. Will o’ the Wisp.—You can obtain white fire from any dealer in fireworks; but as there is considerable difficulty in arranging for its transit by rail, and much variation as regards quality, you had better prepare it yourself. Full directions for making the mix ture, and a drawing of Mr. Frewing’s easily-constructed pyro technical lamp, will be found on page 166 of the Year-Book of Photography. Frd. W. Gregory.—The device is an excellent one, and, as you say, saves a great deal of trouble. Something of the same kind is figured on page 682 of our volume for-1884. Edgar Gael.—The pictures were taken by Mr. W. Barry, of Hull. See Mr. Frewing’s paper about the pyrotechnical light, on page 166 of the Year-Book. Recram.—You cannot do better than have them done by the ink-photo process of Sprague and Co. The address is 22, Martin’s Lane, Cannon Street, London. A. B. C.—1. See page 200 of the Year-Book of Photography, also page 187. The iron . or cyanotype process, as described, is equally applicable to calico or or linen. G. C. Hindley—1. The ordinary solution of the strength you mention is intended. 2. Blacken by immersion in a solution of sulphide of ammonium—one part of the strong preparation and five or six of water. J. R.—1. Do not let the temperature rise above 100 degrees Fah. 2. Seethe Year-Book, page 179. W. D. V.—It is extremely annoying, but there appears to be no remedy. We can sympathise with you, and also with the person who made the mistake. The matter is referred to in another column. Alpha.—Captain Abney’s paper on the subject is to be found on page 746 of our volume for 1884. H. H. Smith.—Collodion films can be, and have frequently been, used for the purpose; but gelatine is to be preferred, because, other things being equal, greater sensitiveness is obtained. F. L.—The decolourization of an old printing bath, by shaking with kaolin, is not always satisfactory when the solution is highly coloured ; a better method is to add two or three drops of a five per cent, solution of salt to every ounce of the liquid ; place the bath in the sun for a few hours, and then filter. If the silver bath be made up with about five per cent, of spirits of wine, and always kept in the dark, the discolouration will be greatly hindered, as the organic silver compound is insoluble in alcohol. A. N.—The curved lines in the copy are due to your using a single lens, which, like the portrait combination, is unsuitable for the purpose. P. Gray.—Carbonate of ammonia is an extremely unstable salt; in contact with the atmosphere it crumbles into a powder consisting of the bicarbonate ; thus the salt should be always preserved in ft well-stoppered bottle. Uhe 30hotographit Jels. SUBSCRIPTIONS. Including Postage to any part of the United Kingdom:— Yearly ... 15s. Od | Half-Yearly ... 7s. 8d. | Quarterly ... 3s. lOd. To the United States, the Continent, ana the Colonies :— Yearly ... 17s. 4d. | Half-Yearly ... 8s. 8d. | Quarterly ... 4s. 4d. To India (Yearly) 19s. 6d. advertisements in column. Not exceeding Five Lines (36 words)... 3s. Od. Each Additional Line 0s. 4d. Repeated insertions, and special positions or style, by contract. Advertisements should be ferwared (prepaid) to Piper and Carte”, 5, ( astle Street, Holborn, E.C., to reach the office not later than noon on Thursday. A fee of Gd. must be forwarded when the Publishers are expected to receive and forward replies to Advertisements,
- Aktuelle Seite (TXT)
- METS Datei (XML)
- IIIF Manifest (JSON)