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The photographic news
- Bandzählung
- 7.1863
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- 1863
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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. 226, January 2, 1863
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Zeitschrift
The photographic news
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Band 7.1863
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- Register Index 619
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Band 7.1863
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12 THE PHOTOGRAPHIC NEWS. [January 2,1863. Talk in tbe Studio. Distribution of Medals.—It appears that ths medals awarded by the jurors in the International Exhibition will be delivered to the proper claimants, on personal application, at the Exhibition building. The following letter has been for warded to medallists:— Exhibition Building, South Kensington, W., Dec., 1862. Sib,—I am directed by her Majesty’s Commissioners to inform you that the medal which was awarded to you by the International jury will bo delivered on presentation of this letter at the Jury Offices, Western Dome, any day before the 10th of January, between the hours of ten a.m. and four p.m. If you cannot yourself conveniently attend, any person whom you appoint to act on your behalf may receive the medal for you on presenting this letter, countersigned by you. This letter must be produced to ensure admission to the building at the Western Dome, Prince Albert Road, and will have to be left with Mr. Iselin, the secretary of the juries, as an acknowledge ment of the medal having been delivered. The certificates of honourable mention will not be ready for delivery till a some what later day.—I am, &c., (Signed) F. R. Sandford. Photography and this Lancashire Fund.—We have pleasure in stating that Mr. Meagher, Camera Maker, ofCoppice Row, has forwarded to the Photographic Exhibition a very hand- some and large trunk camera, which formed a chief attraction in.his case at the International Exhibition. The price of the camera is £25, and lie has requested the Secretary of the Society to devote the proceeds, when sold, to the fund for the relief of our distressed countrymen in Lancashire. “ Photography in its Application to the Magic Lantern Educationally Considered. ”—This is the correct title of the paper to be read by Mr. Samuel Highley, F.G-.S., &c.. at the meeting of the Photographic Society, on Tuesday evening next, at King’s College. M. Asser’s Process of Photolithography.—We have been favoured by Mr. Toovey, of the firm of Simonan et Toovey, lithographers, of Brussels, with some very fine ex amples of M. Asser’s process of photolithography. These for half-tone, far transcend anything of the kind we have before seen. Several architectural subjects are very fine, and one of a portion of the Town Hall, in Brussels, which was quite un touched, leaves little indeed to be desired. It is full ot detail, with every gradation of half-tone down to the deep pure black of the shadows. In general effect it is strikingly suggestive of a drawing by Prout. There are also copies from oil painting, and life size head from a statue, with quite sufficient half-tone for the subject, and is wonderfully bold and fine in drawing. An excellent effect is produced in some by printing in, with a separate tint, a sketchy suggestive sky ; in others there are the graduated tints from warm brown to the blue sky, which gives to some Egyptian scenes from rather hard negatives an exceed ingly fine effect. M. Asser adheres in the main to the formula describedin his specification. For reproductions starch and abichromate are used, for negatives from nature, requiring the preservation of half-tone, a paste of wheaten flour with bichro mite is used. It is probable that some specimens will be exhibited at the forthcoming exhibition of the Photographic Society. Uo Corxespondeuts, Cornish Chough.—You will find information on the subject of magic lan terns in many of our back numbers, we may especially mention Nos. 84, 87, 88,89, 90,126,127, and others. Perhaps’12G will answer your purpose best. Photographic slides and other apparatus for the lantern you may doubtless procure of Bland and Co., Horne and Thornthwaite, Murray and Heath, Cox, Samuel Highley, and others. VAISSIER et VEREY.We have enquired of Mr. Fry as to his yellow glass, and have received confirmation of our remarks last week. The dealer happened to have a sample of yellow glass, which proved non-actinic ; but has not been able to supply with certainty subsequent applications for the same article. T. M. Leahy.—In speaking of paper prepared with the resinate of silver, Mr. Cooper means, as you conjecture, paper prepared with the resin, with out chloride, and then floated on the silver solution. We have been much interested in your experiments with ammonia. The Almanac was sent. Haverfordwest.—Benzole will dissolve a coating of india-rubber from glass. Probably boiling water and friction will make it peel oil. 2. So far as our own experience is concerned we prefer the tannin and honey dry plates to any others ; except, perhaps, the collodio-albumen, and they arc more troublesome to prepare. Perhaps the best mode of washing is that prac tised by our American correspondent. He uses six dipping baths, re moving the plate from one to another, after remaining long enough in each for the coating, &c., of another plate. Sufficient washing to prevent stains is thus secured without much trouble. 3. There may be some danger of unequal sensitiveness in Mr. Keene’s method, but we cannot say with cer tainty, as we have not yet had the opportunity of trying. We are glad to hear you find the News so useful, and thank you for the additional sub scribers you have secured for us. James Stoddard.—Where Mr. Warner has not given a formula, he is doubt less referring to that already given by Mr. Cooper, on page 537, Vol. VI., of the Photographic News, which stands thus : Pure frankincence 10 grains Mastic 8 „ Chloride of calcium 15 „ Spirit 1 ounce. We do not understand Mr. 'Warner as proposing any new proportions, but describing the method of manipulating, which in his hands has been successful. Amicus.—Mr. Osborne’s papers on photolithography appear in Nos. 214 and 221 of the Photographic News, pages 484 and 570 of Vol. VI. A notice of Col. James’ system of photopapyrography appears on page 164 of the (same volume, or No. 187. It is based on the same principle as photozincography and photolithography, but the transfer itself is used to print from instead of putting it on stone or zinc. Justitia.—The streaky background arising from a new bath we have gene rally found to disappear on neutralizing, sunning, and adding sufficient acid. Sometimes the presence of aclinic light in the dark room will cause such streaks. We have known such streaks disappear after using the bath a short time ; and sometimes we have found the addition of a little tincture of iodine to the collodion sufficient to remove them. Moving the plate laterally whilst in the bath, will sometimes prove a remedy ; and sometimes changing the position of the plate, immersing it cross-wise when about half-excited in the vertical position. Try these remedies, and use the (bath a little. It is a pity to put the bath aside as useless when it is working so well in other respects. A LADY Amateur.—You will find full instructions for recovering the silver from hypo baths, &c., on page 50 of our fifth volume, or No. 126. Any gold remaining in old toning baths may be precipitated as dark powder by adding solution of protosulphate of iron, the quantity or strength is unim portant, so long as you add until no more precipitate is thrown down. The brown powder may be converted into chloride of gold by dissolving in aqua regia. C. P. W. states that on his albumenized paper, excited on a 100-grain silver bath (ammonia-nitrate, or rather oxide of silver dissolved in nitrate of ammonia) when hung up, the silver solution collects in drops as if repelled by the paper. We have never met with such a difficulty, and cannot well understand it; possibly the paper has not been floated sufficiently long to form the proper combination ; possibly too much nitric acid has been added to the bath. Possibly the paper is defective in some way, or has been handled and become greasy. C. F. W.—We have no means whatever of knowing whether the advertise ment in question is bona fbde or not. 2. So far as we can ascertain, the lenses of the maker referred to are very variable, some good and some bad. We prefer the last-mentioned as being most trustworthy. 3. Portraits can be taken with a view lens, but it is not the best instrument for such work. C. W. S.—You will be able to obtain all information of Mr. Alfred Harman, 3, Albert Cottages, Hill Street, Peckham, the Secretary. The next meet ing is held at the City of London College, Leadenhall Street, on the evening of Thursday January 8th, when, if you choose, you can attend. We shall have pleasure in proposing you. D. Weston.—We are not sufficiently familiar with the lenses of any of the makers you name to speak with certainty of their qualities, or advise you satisfactorily. We believe the first mentioned permits buyers to test the lenses, an arrangement which ought to lead to satisfactory results. Whether the others do so or not we do not know. T., A New Subscriber. — We regret that we cannot charge the back numbers at a reduced price. Many of them we will willingly pay full ; price for ourselves. The figures are accidentally omitted, you will find ; them, however, half a dozen lines above. 2. The printing process used ; by Mr. Fountaine in his printing-machine is that by development. The paper is prepared with an iodide and bromide, and a condensing lens i; । used to concentrate the light. By these means instantaneous or very rapid I printing is not impossible. J. II.—The enlarged prints from America, exhibited at the meeting to which you refer, were printed out on ammonia nitnite paper. We were not present ourselves, and did not see them, but we learn from trustworthy authority, that they were very poor indeed. We have not yet heard par ticulars of Mr. Stuart’s new apparatus, but the prints he has already pro duced by the old one, are, as nearly as possible, perfect. Novice.—A good glass positive cannot be converted into a good negative. 1* it be good as a positive, it will be insufficiently exposed for a negative- Negatives may be produced by means of iron only, but not always so con veniently as with pyrogallic acid intensifying A collodion, giving a some what dense image, developed with acetate of iron, is frequently sufficiently dense, without further intensifying. Varnishing is only necessary for thf protection of the negative. If it have been well washed, and the excite* paper be quite dry, no danger arises from the two surfaces coming into col tact. If the paper be damp, however, a brown stain may result, especial if the slightest trace of hypo remain in the film. Varnishing is alwal safer, but where one or two prints only are required, it may be dispense with. , A PRINTER.—If clouds arc well painted nt the back of the negative, or if the be well printed in separately, we think they are quite permissible. " have often said that in such subjects success is the touchstone of legit, macy. It is only when the thing is badly done that it challenges cris cism. The object is to produce really good pictures ; this done, the men 11 ’ will not often be challenged. Several correspondents in our next. t All Letters, Works for Review, and other Communications 1 the Editor, should bo addressed to the Office, 32, PATEINOSTP Row, London.
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