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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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Zeitschrift
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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Band 27.1883
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334 THE PHOTOGRAPHIC NEWS. [May 25, 1883, ference. I made holes about one-quarter of an inch apart, and, passing a string in and out, drew it tight upon the outside of a piece of three-eighths of an inch pipe; I then wound a siring tightly over the rubber, on the pipe, and found the whole to be air-tight. This served me for some time ; but one day, on apply ing the pressure, I found a hole in the balloon, which looked as if it had been cut with a very sharp knife. That it had been so cut was not to be imagined, and on further examination I found that the fracture had occurred at a line which separated a surface in the strong sunlight from a surface in the shade, at a fold in the rubber. I saw that all of the rubber which had been continuously exposed to the intense sunlight had changed colour and bad be come whiter than before, and that that portion of the balloon had lost its strength. I then returned to the use of the mercury gauge, and took the precaution to cover my pad with cotton flannel, as a protection from the light and from other sources of destruction. This pad is upon the roof of the Institute, and is exposed to all weathers. As a protection from the rain and snow, the whole is covered again with a rubber blanket. It has with stood the exposure perfectly well for a year, without injury. The gauge, made from flat rubber, is altogether so cheap and so con venient that I am now experimenting with one of this description having a black cloth covering upon the outside. The balloon is of spherical shape, the black cloth covering is of cylindrical shape, and I hope that this device will serve every necessary purpose. A sectional view of the air-cushion is offered as a part of this communication. The Frame which contains the Plate Glass is made of thick board or plank, with the broad side of the board at right angles to the surface of the glass. A rabbet is made f? the reception of the glass, and four strips of strap iron, overlapping both the glass and the wood, and screwed to the wood, keep the glass in position. Strips of rubber are interposed between the glass and the wood and between the glass and the iron. The frame is hinged to the back-board by separable hinges, so that the glass can be unhinged from the pad without removing the screws. Hooks, such as are used for foundry flasks, connect the frame with the pad upon the opposite side. A frame made in this manner is very stiff and springs but little, and its depth serves an excellent purpose. The air-cushion and the frame are so mounted that they can be easily turned to make the surface of the glass square with the direction of the sun’s rays. It is necessary to have a tell-tale connected with the apparatus, which will show when the surface of the glass has been thus adjusted. The shadow of the deep frame is an in expensive tell-tale, and enables the operator to know when the adjustment is right. I have now described, in detail, the construc tion of the air-cushion with its back-board, as well as that of the frame which holds the plate glass, and 1 think it will be evident that the first cost of the meterials of which they are made is com paratively little, and that the workmanship required to produce it is reduced to a minimum. It will also, I think, be evident that a uniform pressure, of any desired intensity, can be had all over the surface of the sensitized paper for the purpose of securing perfect contact between it and the negative. The blue copies that are taken with this apparatus are entirely free from blue lines when the negatives, chemicals, and paper are good. (To be Continued.) Uorrespondence. THE GREEN TREES AT PAYTA. Dear Sir,—Mr. Wood’s anecdote about a certain white wall, and a compassionate artist’s work thereon, may, of course, be regarded as a very good joke, and possibly rumour may transform it into a legend; but let the ignorant natives of Northern Peru be ever so superstitious, they would scarcely convert what I know to have been a painted fence into a legend in less than twenty years. About a dozen years ago, I was in Payta for a few weeks, and had an opportunity of visiting this supposed tree. Payta is an old Spanish seaport in Northern Peru, less than 300 miles south of the Equator. The houses are built of bamboo, raw hide, and mud ; therefore, bing of sand, situated on sand, surrounded by a series of sand hills, and not a ’vestige of shelter from the scorching sun, as neither grass, shrubs, nor vegetation of any sort grows in or near the place : anything looking like foliage must necessarily be a treat to the optics. The inhabitants live principally upon fish caught in the vicinity, and fruit brought down from Ecuador; these commodities maybe obtained at marvellously low prices, and a good stroke of business is generally done with the mail and other steamers which call there for coal and water. But how is it they call for water, seeing it is such a scarce article ? A few miles along the shore the Steamship Company erected large works for condensing the sea-water, to enable them to keep their ocean-going steamers supplied with fresh water, and from this establishment all the fresh water used in the town was obtained, there being no other. The Company’s premises, consisting of such a valuable pro perty as fresh water, was enclosed by means of a high fence. It being customary to whiten all the houses iu Payta, to keep them cooler, this fence was whitened as well ; but the glare of light was so great, that the manager caused green trees to be painted all round the fencing. As this fence occupied a considerable length of the foreshore, it is quite easy to imagine what the effect would be from a distance. Passengers arriving in the harbour from the Equator lost no time in getting ashore, so that they could take a stretch out to these attractive-looking trees, much to the amusement of the natives who were on the landing stage with their donkeys ready to take the traveller for a ride out in the country proper. By a curious coincidence these trees never looked more than a couple of miles distant along the shore ; but after resolutely tramping over pebbles for an hour or more the town looked very much the nearer of the two ; while the intensely scorching sun generally determined a right about-face and quick-march for the narrow and crooked streets of mud huts, where luscious bananas, pine-apples, and oranges, &c., can be obtained for a mere trifle. Among this mixed community of Peruvians, Indians, Mexicans, Spaniards, Chilians, &c., I found an American, who, when at liberty, kept the principal hotel; but for no greater sin than placing a notice-board on a sand-hill, cautioning visitors not to break down the shrubs (which was regarded as a practical joke), the authorities directed the gendarmes to remove him to the prison, where he remained incarcerated for four weeks with some forty other prisoners of all races in one huge cell, without being charged with any offence. At the end of this period his family paid a sum of money which put matters straight for a while, enabling him to resume his duties at the hotel until the authorities arrested him again. Photography was represented by a Frenchman who, if not a landscapist of the first order, was essentially an out-door photographer, for all his photographs were pro duced in the back-yard. As the floor was neither carpeted nor boarded, the sand made it pleasant to walk upon, whilst the mud walls surrounding this, as in all other yards in Payta, screened off a deal of direct sunshine; so with very meagre accessories the photographer was enabled to satisfy the demands of his clients. Considering that local wines may be purchased for about the same price as fresh water, which, being condensed, is always more or less brackish, the Frenchman’s productions were as creditable as could be expected, and he expressed himself to me as being quite satisfied with Payta as a field for his labours.—Yours respectfully, One who has been there. PACKING PLATES FOR TRAVELLING. Dear Sih,—Your article on the above in this week’s News induces me to suggest to my co-amateurs a plan for carrying exposed plates when travelling, which I found most effective on the Continent last year. 1 had made zinc boxes similar to the card-board ones in which makers pack their plates. In each I put a square of Turkey-red twill, which was folded over the plates when transferred from the dark slides ; in this manner my plates reached home without any damage from either fracture or fog.
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