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The photographic news
- Bandzählung
- 12.1868
- Erscheinungsdatum
- 1868
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- Englisch
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- F 135
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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. 502, April 17, 1868
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Zeitschrift
The photographic news
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Band
Band 12.1868
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- Titelblatt Titelblatt I
- Kapitel Preface III
- Ausgabe Ausgabe 1
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- Register The Index To Volume XII 619
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Band
Band 12.1868
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- The photographic news
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April 17, 1868.] THE PHOTOGRAPHIC NEWS. 191 solution, and added to it 5 drachms of methylated alcohol; ho placed the bottle containing this on a piece of wood in a sauce pan of cold water, and allowed it to come gently to a boil, continuing the boiling for about ten minutes. To this ho added 8} ounces of glacial acetic acid, and then filtered ; this flowed over the plate evenly at once, and gave admirable results. With the common sample of iron ho made a similar solution, but he added to 1 ounce of alcohol 2 drops of the potash solution, and of this alcohol added 5 drachms. In this case the solution should bo warmed, but need not be boiled. The same acetic acid weuld of course be added. Mr. McLachlan gave many explanations and cautions, but we have hero endeavoured to present the salient parts of his operations until he have opportunity of doing himself full justice in a written paper. A vote of thanks was passed to Mr. McLachlan, and Mr. Mayall proposed that a committee, consisting of Mr. Bedford, Mr. Sebastian Davis, and Mr. H. P. Robinson, be formed to work experimentally with Mr. McLachlan, and report. The Chairman’ said the Society could scarcely appoint a committee which should in any way control Mr. McLachlan in selecting his own mode of putting the matter before them, but that he would doubtless be glad to receive the assistance of those gentlemen. Mr. Mayall explained that his aim was to give weight to Mr. McLachlan’s statements by experimental confirmation ; and it was arranged that the gentlemen named and Mr. Mayall should further communicate with Mr. McLachlan. After a few further remarks the proceedings terminated. orrespouence. PHOTOGRAPHY AND DISEASE. Sir,—I have often been pleased with the interest taken by you in the personal welfare of .the followers of the art of photo graphy, no matter whether professional or amateur, proficient and highly successful down to the veriest tyro ; all alike have your sympathy ; candidly and truly do you advise with your readers. Well, now, you recently opened your columns to discuss the subject of the health ot photographers ; and that subject, one of the most vital to every human being, has for many years been ever present to my own mind, sensible as 1 have always been that I was practising a business that was, in its very nature, prejudicial to my health unless 1 exercised great con tinued care. I have always exercised care, and, with the bless ing of God, I have had my reward. I am an old photographer, and I may say that I am not a young man—over 50. I do not boast, but state simply as a fact that I enjoy robust health. For this blessing 1 am thankful. From the days of Daguerreotype I have led an industrious and energetic life, and hundreds of times, at the end of a hard day in the glass house and dark room amongst heat and chemicals and excitement, I have been thoroughly exhausted; but I have lived out of town (I am a photographer in a large provincial town), and intend to con tinue to do so. After business is over, my plan is to take the 'bus, if tired or bad weather, and get away into the country to my residence, which is well ventilated, and where we have an abundance of fresh air; of that fresh air I have a good drink before I return to business next morning. I am thoroughly refreshed mentally and physically, and am ready buoyantly toTace either customers, chemicals, or anything else in reason. I may say that, although not a teetotaller, I am a very temperate man, and make it a rule not to drink intoxicating drinks during business hours. I take a very light lunch at mid-day, and after business is over I make a substantial meal. In conclusion, I may say that I cannot seo how a photographer can expect to have good health, or, any how, robust health, when, especially in large towns, he “ lives on the premises,” carrying with him to bed the fumes of the cyanide and other poisonous drugs, permeating and clogging the whole system, and rising next morning unrefreshed, restless, enervated, and almost life less. Is not this the case with many of our brothers in photo graphy?—I am, sir, yours respectfully, Yorkshire. SOME DRY PLATE HINTS. Sib,—If the following hints are of any use to the photo graphic world perhaps you will allow them space in your valuable columns. I have for some time been using England’s dry process with the greatest success, and am only too glad to bear testi mony to its value. I have used the formula laid down in your Year-Book approximately. In the albumen, I have varied the proportions of water, using half-and-half, and sensitizing with from 30 to 10 grains of silver, according to the tempera ture of my operating-room. As I have never found any differ ence caused by the heat during exposure, even though the plate be kept a month in hot weather after being sensitized with the 30-grain solution, I have used collodion bromized with from 2 to 4 grains of bromide, and with the latter have found that the plates absolutely improve with keeping up to a month; and that in no case deterioration takes place in them for three weeks. I have also found that the exposure given to the plate signifies little, so long as it has between three times and six times the exposure necessary for wet plates. Below or above these points the negative is under or over exposed. In the south of France, where I am at present residing, the houses suffer from the “ no tap ” system, the French seemingly having an objection to more than the smallest quantity of water inside their habitations. I advise speculators in water works schemes to have nothing to do with those that may be proposed for the towns out here). This is a serious drawback to the pleasant preparation of these plates. I have adopted the system in consequence of washings in trays partly. I coat, sensitize, and lay the plate in a dish of water, face upwards; coat, and prepare another ; take the first plate out of the water, swill, albuminize, and sensitize as usual; swill, lay in a dish with sloping sides, face downwards, till the next plate is ready to take its place; swill again, and set up to dry. Pictures are always much more satisfactory if development ensues before thirty-six hours after exposure. I have found that the negatives, after a longer interval, are weak, as a rule. The coffee process is very sure, but the exposure is too long to please me, being eight to ten times that of wet. The negatives obtained by it are very good, but the right amount of washing is important to be attended to; extra washing diminishes the sensitiveness amazingly. In conclusion, let me recommend a receipt for using up the yolks of the eggs used for the albumen :—To two yolks add one glass of sherry and one of milk ; beat up well with powdered white sugar, a little nutmeg, and a teaspoonful of brandy. The mixture taken internally before commencing adds mate rially to the good preparation of the dry plates, and a similar dose afterwards is not amiss.—I am, &c., R. E. April 10th, 1868. Ualk in tbe Studio, Photography and the Abyssinian Expedition.—The official report of Lieut.-General Napier in regard to the opera tions of the Abyssinian Expedition states that the photo graphers of the Expedition have been employed in photo graphing plans and views, as well as surveys of the route onwards, prints of which are handed over to the commanding officers of corps previous to the march. Photogeaphic Identification.—A singular instance of doubtful identity has recently occurred, in which even a photo graph was insufficient to give certainty. The body of a man was discovered in a newly-built house at Hackney, and in regard to which the curious difficulty of identification has arisen. Two medical men identify it as the body of an escaped lunatic named Heasman, and his brother confirms their state ment. A lady identifies it as another person, her missing husband, and her two sisters confirm her identification. Another lady produced a photograph of a missing relative, which bore a far more striking resemblance to the deceased than did either of two photographs subsequently shown by Mr. Heasman as those of his brother. The incidental circumstances seemed, however, to give the most weight to the supposition that the body was undoubtedly that of Heasman the escaped lunatic.
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