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The photographic news
- Bandzählung
- 29.1885
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- 1885
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- Hochschule für Grafik und Buchkunst Leipzig
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- Hochschule für Grafik und Buchkunst Leipzig
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- Bandzählung
- No. 1407, August 21, 1885
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The photographic news
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Band 29.1885
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- Register Index III
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August 21, 1885.J THE PHOTOGRAPHIC NEWS. 535 under notice, but also of the advantages of a scientific combination of cycling with photography. His experience, which he has kindly given nre permission to publish, Mr. Hughes relates as follows :— “At some period of the year I invariably throw off the yoke of studio work, and embrace with delight a respite from the everlasting, monotonous, full-length, three- quarters, and vignette, and spend two or three days in search of the picturesque and beauties of Warwickshire scenery. “Now I never go more than twelve or fifteen miles out, and within that radius I can always find ‘ fresh fields and pastures new.’ As I cannot always get within easy dis tance of my subjects by rail, and as I always work 15 by 12 plates, my readers can fancy they are tramping on one of the scorching hot days like we experienced last summer, through wools, over fields, and stiles, carrying a 15 by 12 Kinnear camera, tripod, two double dark slides, and leather case containing several lenses, screws, head cloth, spirit level, and all those little things. I have him in mind’s eye now, supposing he has been out several hours, heaping much abuse upon the poor camera-makers for not making that piece of apparatus lighter ; hot, tired, and dusty, and wondering if the game is worth the candle, I see him thus, and I sympathize, for I have gone through the same experi ence myself times without number ; but now all that is at an end. “ Residing in the Midlands, the home of the cycle, I think I may venture to say the machine I use possesses every good quality, and everything that professional or amateur photographer could wish for in medium or large size work. The machine is ‘ Singer's Carrier,’ made on a slightly smaller and lighter scale, but still possessing all the sterling qualities of the ordinary 1 Carrier.’ The rider sits in the exact centre of the machine, and in front of him is the dark tent containing all apparatus except the tripod, which is strapped on the top. The tent is made of light pine, and rides on two light iron bands of square U -shape, which are fastened to the frame each side of the machine. The measurement of the tent is as follows : —Length, 24 inches; breadth, 12 inches ; depth, 20 inches; and, when empty, it weighs 10 lbs. “ When I come to my subject I set to work in the follow ing manner. The tent is lifted from the position in which it rides—i.e., lengthways, and placed c ossways. There are two light iron rods which fit upright into two sockets, which are placed one each side the machine on the inner side of the framework. At each end of the tent is a small but strong eye-hole, which fits the rods. The tent is placed on the rods and allowed to drop down, when it is at once firm and immovable. It is then unlocked; one part drops down and forms the sink, or what was called a sink in the days of wet plates. Two light iron rods, with folding elbows, are bent out from the top, over which the covering falls, which consists of canary medium inside and black calico outside. You sit on the saddle to change your plates, and do all the inside work just the same as when riding. I can get the whole thing up and have my camera fixed in five minutes, and it takes no longer to pack up. “ To really show what its capabilities are, I will describe a day’s work done last summer. Myself and an amateur friend started one lovely morning at half past four, he in tending to work 7| by 5 plates, myself 15 by 12 ; and I may say beforehand that my machine carried his camera, legs, and plates besides my own, the whole -weighing between 160 and 170 pounds. Our first halt was at Kenil worth Castle, distance six miles, where we got two fine pictures. By seven we had finished and adjourned for breakfast. At half past eight we started again; our next stopping-place, Warwick Castle, distant six miles from Kenilworth. We exposed five plates here: from the bridge looking toward the castle ; the old bridge across the Avon ; from the banks of the river, all of which turned out successful negatives. We then started for Stoneleigh Deer Park, distantabout seven miles from Warwick, which we reached about half-past two. 1 he first thing we did after halting was to rest and satisfy our hunger. In half an hour we were ready for work, and exposed five plates from different points of the river, all of which were suc cessful. At five o’clock we started for home, and after a short stay at Stoneleigh Village, reached our destination at about seven, after a five-mile ride. We thus rode twenty-four miles and secured twelve negatives each.” All 1 can add to this is to say to each of my readers, “ Go thou and do likewise.” THE NITROUS OXIDE AND CARBON DISULPHIDE LIGHT. BY WM. THOS. JACKMAN, NL.R.C.S., ETC. The light obtained by burning a mixture of nitrous oxide gas and the vapour of carbon disulphide is well known to be very powerful for photographic purposes. It is of an intensely blue colour, and very active in photographic chemical properties, being, according to Stein,* twice as powerful as that of the oxyhydrogen flame, and three times as powerful as that of the electric lamp. This able scientist points out that when in full power it illuminates a larger surface than the same sized flame of other arti ficial sources. Moreover, when the cost and trouble of fixing the apparatus for this light are compared with that of the electric or of the oxy-hydrogen, it seems highly probable that this form of artificial light will be more extensively used than it is at present. The want of a reliable, cheap, and uncumbersome arti ficial light has long been felt by photographers; hence I am emboldened to draw attention to this source, and explain shortly the apparatus required for its use, and refer to a few of the experiments which have been made with it, hoping thereby to encourage its more general trial in the art of photography. An ingenious apparatus for the mixing and burning of the nitrous oxide and carbon disulphide vapour has been invented by Delachanal and Mermet, of Paris, by which a constant light can be obtained, and the danger of an explosion obviated, for it must be borne in mind that carbon disulphide vapour is very explosive under certain conditions. The apparatus consists of a double-necked flask of about 500 c.c. contents, which is filled with pieces of sponge or pumice, saturated with the vapour of carbon disulphide. Into one mouth, A, a bent tube is fixed, through which the nitrous oxide gas passes into the flask. A second bent tube is fixed into the other mouth of the flask ; this passes into a wider tube of metal, B, 20 c.m. long, which is tightly filled with iron filings, the object of this being to prevent the flame passing back into the explosive vapour contained in the flask. After passing through this tube, B, the mixture of nitrous oxide and carbon di sulphide is led by means of an india-rubber tube to a moditied Bunsen’s burner. This burner has neither the usual opening for the admission of air, nor the arrangement for regulating the quantity of gas passing through it. The nitrous oxide enters the flask through A, and after mixing with the vapour of the carbon di-sulphide in the flask, passes through B to the • Das Licht, von S. T. Stein.
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