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The photographic news
- Bandzählung
- 24.1880
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- 1880
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- Bandzählung
- No. 1151, September 24, 1880
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Zeitschrift
The photographic news
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Band 24.1880
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- Register Index 631
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Band
Band 24.1880
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SEPTEMBER 24, 1880."] THE PHOTOGRAPHIC NEWS. 461 My photographic experiences have been carried on in the Gabriel balloon, of 1,225 cubic metres, belonging to the Society of Aeronautic Experiences, of Paris, of which M. Jovis is the director. It was managed by M. Lair, who was aided by M. Marquelin. It was at 6.30 p.m. when I took my negatives, through a mist. The exposure was about one-twentieth part of a second, and the speed of the balloon was from six to seven metres per second. One of my plates represents the commencement of the village of Meslin-Esnard, near Rouen. The photograph is reduced about 100. It was obtained by placing the camera vertically, the lens passing through a hole pierced through the bottom of the car. The other represents the view from Rouen to Quille- buf, showing the windings of the Seine and the clouds. I placed my apparatus horizontally on the edge of the car. Rouen and the earth were shrouded in mist. I have had this latter print enlarged by M. Carette, of Bois-de-Colombres, and it brings out several details which are not to be seen in the small picture, even with the magnifying-glass. These photographs may be of great use in the future, both in topography and meteorology, as well as in the army. PHOTOGRAPHY AND MAP MAKING* I have the honour of presenting to the Photographic Society of France, on behalf of our colleague M. Civiale, a large map of the Alps which he has just finished, and which has been executed under his immediate direction. It is the result of twenty-two years’ work carried on with the greatest care. Photography has played an important part in this work ; it has been used in ascertaining the exact height of the greater number of the summits. For years, M. Civiale has gone over the Central Alps, beginning by the mountains of Dauphine, in the west, as far as those forming the frontiers of Carinthia on the east. Over this vast space he took forty-one photographic panoramic views, each comprising a complete circuit of the horizon. The route followed on this series of travels is indicated by a red line on the map, show ing the centre of excursion and the panoramic station point. All the negatives have been taken on paraffin paper by the author’s own process. M. Civiale determined not to use glass, although sharper, more rapid, and more delicate results would have been obtained, because in the use which he made of his negatives, had he broken one, the whole series would have been spoiled. It was, therefore, better that M. Civiale should not run the risk of such danger. The panoramas have been photographed with an apparatus placed perfectly level, and the focal length was so adjusted that it is identical with all parts of the view. The horizon of the station point is determined by a line passing through the point, the height of which has been accurately calculated by the barometer, and passing through two or three other points also determined on the panoiama by means of tested heights, whether by the barometer, or by triangulation; this horizon, once established on the different panoramas, will permit the height of all points to be calculated and verified in the following manner— H= "" II, represents the height of a point above the horizon ; h, the height of this same point on the picture ; D, the dis tance between the station point and the summit to be measured ; and J, the focal length. By the help of these views and calculations all the central portion of the map, from west to east, has been constructed. The scale of reduction employed is 1-600,000th, in order that the whole maybe printed on one sheet to form a poi table map. Photography has again been called into service for the purpose of reducing to one uniform scale, by aid of the camera, and also for joining the central chains as well as the surveys made on the land. • Bead by the Secretary to the French Photographic Society. The drawings of the frontiers, roads, railways, either existing, or in course of execution, have been traced with great care, and the photographic routes followed by the author during six years of travel, give tourists precise indi cations as to the parts they can travel through. Even the names have received great attention, and M. Civiale has endeavoured to bring back the foreign names to their true orthography. This work has been the subject of a communication to the Academie des Sciences, and to a special commission. Once more affirming that photography is of great use in many ways when specially applied, I wish to be the interpreter of the Society in thanking M. Civiale for the gift of this map, and in congratulating him on having succeeded so well in such a large undertaking. BELGIAN INTERNATIONAL EXHIBITION AT GHENT. The following is the list of awards :— Al! State departments or establishments connected with the Government were ruled hors de concours. A. Heliographic Engraving.—For the largest and finest impression, a prize of 250 francs, a silver gilt medal, and a diploma, awarded to M. Charles Klic, painter, Vienna. Second prize, the sum of 150 francs, a silver medal, and diploma, awarded to M. P. Arents, photographer, Paris. Third prize, a silver medal, and diploma, M. Evely, at Brussels. B. Phototype on Stone or Metal.—For the largest a id finest impression, a prize of 250 francs, a silver gilt me lai, and a diploma, awarded to M. Strumper, of Hamburg. Second prize, the sum of 150 francs, a silver medal, and diploma, M. W. Hofiman, of Dresden. C. Woodburytype and similar processes.—For the largest and finest impression, equal prizes of 200 francs, silver gilt medal, and diploma, to Mr. Woodbury, of South Norwood, for the Woodbury process and modifications of the same ; and to Mr. Bruckmann, of Munich, for applications of Woodburytype. D. Photography in Pigments.—For the finest and most numerous collection of prints, whether direct or enlarged, a prize of 150 francs, a silver medal, and diploma, to M. Hallez, of Dinant. Second prize, a sum of 100 francs, a bronze medal, and diploma, to Mr. John Moffat, Edinburgh. E. Vitrified Photographs.—A prize of 150 francs, a silver medal, and diploma, to M. A. Leisner, of Waldenburg. F. Cyanotype or Plan Printing.—A prize of 100 francs, a silver medal, and diploma, to M. Oscar Kramer, of Vienna. Second prize, a bronze medal, and diploma, to M. Ed. Sacrd, of Ghent. G. Photographs in Salts of Silver.—For the finest and most numerous collection of large prints distinguished by elegance and originality of subject, and the least retouched, equal prizes of 100 francs, silver medal, and diploma, M. Augerer, of Vienna ; M. Maier, of Munich. Second prize, silver medal, and diploma, Mr. Annan, of Edinburgh. H. Apparatus.—A prize of 100 francs, silver medal, and diploma, toM. Jontc, of Paris. Second prize, bronze medal and diploma, to M. Corroyer, of Brussels. Further the Jury accord:— A medal of silver gilt and a diploma to Mlle. Relvas, of Gollega, Portugal, for her fine exhibit. Silver medal, and diploma, to M. Hartwig, of Magdeburgh, for enlargements; Madame Dupont, of Brussels, for the application of electric light to photography ; M. Zeyen, of Liege; Mr. Hare, of London, for apparatus; M. Trzemeski, of Lemburg ; M. Lbwy, of Vienna; M. .lafle, of Vienna; Mr. John Davies, of Edinburgh, for his platinotypes. Bronze medal to M. Schber, of Durlach ; M. Baeckmann, of Carlsruhe ; Toulouse Photographic Society ; M. Ladislas Reinhardt, of St. Petersburgh. A prix d'excellence, consisting of 300 francs, a silver gilt medal, and a diploma, was awarded to M. Klic, of Vienna, for his heliogravures.
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