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The photographic news
- Bandzählung
- 27.1883
- Erscheinungsdatum
- 1883
- 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-id1780948042-188300004
- PURL
- http://digital.slub-dresden.de/id1780948042-18830000
- OAI-Identifier
- oai:de:slub-dresden:db:id-1780948042-18830000
- Sammlungen
- Fotografie
- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
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- Parlamentsperiode
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- Bandzählung
- No. 1307, September 21, 1883
- Digitalisat
- SLUB Dresden
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Zeitschrift
The photographic news
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- Titelblatt Titelblatt I
- Register Index III
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- Titel
- The photographic news
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596 THE PHOTOGRAPHIC NEWS. [SEPTEMIBER 21, 1883. Pd- • 4luV• AV 13 UMIS 4luC PidU UndV —-ua-VJ •J -1* U, If 113V U J WelnA—’- " : the printing block; the plate is put into acidified water | and traveller; and next to it the Photographer, a Russian impression in greasy ink is placed face downwards on a plate of zinc. It is this zinc plate that ultimately becomes may be seen a large muscular mastax or gizzard, which is diligently pounding away and masticating the food as it passes down to the well-filled stomach. It is curious how all the internal anatomy of these creatures can be examined whilst in active life. Around the stomach is a much larger sack, which is the ovary, and is seen to contain embryos in various stages of development, and most likely a nearly mature egg ready for extrusion. The extraordinary size of these eggs is remarkable, often in this class of animals nearly a quarter of the size of the mature ones. If one of these groups is examined, numerous eggs will be seen in the gelatinous mass amongst the tails of the rotifers. It is also interesting to watch the young ones as they come out of the eggs gradually wriggling their way out of the maternal group, and before long an independent group of them will be seen attached together by their tails. In this stage the ciliary wreath round the head of the young rotifer is comparatively much smaller than in the mature animal, but there are now seen in their heads two brilliant red eyes, which disappear after the group has attached itself to its permanent locality. Mr. Bolton has shown lately a rotifer asplanchna Ebbesbornii (new to science), of which he has sent specimens to his subscribers, accompanied by a drawing and descrip tion, which was the first published account of the species. In the last row on the left is the Philadelphia Photo grapher, a familiar monthly journal to many of our readers, edited by Mr. E. L. Wilson, well-known both as author to etch, the bath being made more strongly acid as the work goes on, and the etcher taking care from time to time to strengthen the greasy lines on the ziuc surface to prevent the action of the acid in these parts. In the end, the acid eats away the zinc to a considerable depth, and leaves standing in relief the lines of the sketch or design, or other reproduction. These photo-etched blocks are printed from in precisely the same way as ordinary type, and, as in the case of our own illustration, may be machined in combination with letter-press set up by the compositor. One important journal, to our regret, has been omitted from the examples we set before our readers : we mean the Wochenblatt, the Berlin weekly journal, so ably edited by our colleague Dr. Stolze. Otherwise all the principal foreign journals are represented in the seventeen examples here set out. To commence at the left hand, at the top of the page, there is the Journal de I'Industrie Photographique, a monthly paper that represents, in Paris, the Chambre Syndicate of Photography, or, in other words, looks after the commercial aspect of photographhy and photographers. Next to it is the Pholographische Notizen, a monthly Viennese paper, noted more particularly for its able practi cal article by our friend Dr. Hermann Vogel, of Berlin, that usually takes precedence. The Bulletin of the Belgian Association comes next, also a monthly periodical, and now the only photographic paper published in Brussels; it has of late earned for itself a high place in photographic litera ture by reason of the first-rate writers that contribute to its pages, and the energetic editorial supervision exercised over its contents. Its elder brother, the Btdletin of the French Society, is at the right hand top of the page, and is the organ of the Paris Society, whose transactions are reported monthly after the fashion of our own Great Britain Society. In the second row on the left is a page of Anthony's Photographic Bulletin, a New York paper, circulated by the well-known firm of Messrs. E. and H. T. Anthony, of New York, who keep their readers well informed on the pro gress of photographic matters, both in the old world and in the new. Anthony's Bulletin is a monthly paper. The Deutsche Pholographen Zeilung shares with the excellent Wochenblatt (of which we regret having no illustration) the honour of being the only weekly photographic journal outside Great Britain ; the Zeilung is printed at Weimar under the clever editorship of Herr K. Schwier. Next to it is an Italian organ, the Camera Oscura, a monthly journal established many years ago, and which of late has come forth with renewed life and energy. Of the Rivisla Fotografica, the other Italian paper, we are sorry to say we have no example. On the right of the Camera Oscura is a sheet of the Photographische Mittheilungen, Dr. Hermann Vogel’s admirable fortnightly journal, which reports the doings of the Berlin Society for the Advancement of Photography, and keeps well apace with the scientific pro gress of our art. In the third row on the left is the St. Louis Photographer, an energetic monthly paper which formerly had Mr. Fitz gibbon for its editor, and beside it the only photographic newspaper published in Spanish, viz., the Bolelin Fotagrafico, which emanates from Havannah ; it also appears monthly. The Photographische Correspondenz is next, one of the most scientific of photographic organs, taking high rank by reason of the many contributions to its pages from our talented colleague Dr. J. M. Eder, no less than from the circumstance that its editor, Dr. Emil Hornig, is without doubt the best living authority on the history of photo graphy. The Correspondenz appears monthly, while its neighbour to the right, Dr. Liesegang’s well-known Archie, is a sprightly fortnightly that emanates from Dusseldorf. SOME FOREIGN JOURNALS. Our readers have frequently expressed a desire to know something of our foreign contemporaries, and it is with a view of placing before them more than a mere verbal description of the principal journals devoted to photo graphy in Europe and America that we here reproduce a page from each of them. The work of reproduction has been done for us by Mr. J. Swain, of Farringdon Street, by the so-called photo-zincotype process, and we need scarcely point out how exceedingly well the task has been accomplished. When it is borne in mind that the type is in every case different, the inking and machinery in no two instances alike, and that the size of the reproductions are microscopic, there can be nothing but praise for Mr. Swain’s impressions, which, if printed on fine paper, and in a more deliberate manner than our own sheets are machined, would be found to be quite as perfect as the large type from which they are reduced. The process of photo-zincotype—or photo-etching, as it is sometimes called—is one that is largely used now-a- days in connection with publications of all kinds, and every year sees an extension of the work. Its importance will be seen from the circumstance that an artist’s pen-and- ink sketch, or a printed cut or design in black and white, can be transformed into a type-block ready for printing in an ordinary printing press in from six to twelve hours. Nay, three hours is the time in which some photo-blocks are prepared, if sunlight or electric light is available. The sketch in black and white is stretched on a screen, and a negative taken of the required size of the type-block ; this reproduction may be many times smaller than the original, as in the present case before the reader, or enlargements may be made to serve for coarse placards or big posters. The negative secured, it is intensified and printed forth with upon prepared paper, sensitized by means of a solu tion of bichromate. This print, when moistened, receives ink upon its surface—the ink adhering to the transparent or black lines of the sketch—and thus becomes a transfer, which is laid down upon stone. Here it is carefully rolled up by a skilled lithographer, who thus produces a finely- inked sketch in black ink, every line bold and clear, and charged with fatty ink. A sheet of paper having a fine surface is now used for taking off an impression, and the
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