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544 each packing case; 5. AU exhibits must be delivered at Derby, carriage paid, on or before Wednesday, the 4th of November, addressed “Winter’s Fine Art Exhibition, Derby." 6. Every care will be taken of the works contributed, but, as in the case of the Royal Academy, Mr. Winter does not hold himself, nor will his agents be, responsible for breakage or damage of any kind. 7. The right of rejecting any work sent for exhibition is reserved. 8. The decision of the judges shall in all cases be final, and power is reserved to withhold the prize when the works are not of sufficient merit. Certificates will be awarded in addi tion to the foregoing prizes to works of superior merit. The Exhibition will be opened by Sir Henry Wilmot, Bart., V.C., C.B., M.P., on Wednesday, December 2nd, 1885, at 11 o’clock, and remain open until Saturday, January 23rd, 1886. IDIXTrYINO the Dead.—The police authorities are, it is stated, about to take some further steps towards procuring the identification of the many unclaimed bodies which are continu ally being found in the rivers and canals, and in the streets of London and its suburbs. The course adopted hitherto has been to issue a written description of the body, and have it posted up outside some of the police-stations ; but instead of this, or in addition thereto, it is proposed to photograph each unclaimed body prior to decomposition setting in, and have the likeness circulated and placed in a frame outside each station. The police of the K division have set the example, and the first photograph of a dead man ever displayed at Bow Police-station was yesterday placed on the black board for identification.— Daily Niu's, PURCHLASING Hxdnoqurox.—Three months ago cur worthy friend Mr. Brown, who is the fortunate owner of a large phar maceuticalestablishment not a hundred miles from Buckingham Palace, was asked to supply a customer with hydroquinon—“ not as a medicine, but for photographic purposes," it was intimated, and the writer of the order added, “ If this substance is on the list of poisons, 1 will sign for it.” Now Mr. Brown did not remember having ever heard of hydroquinon, and, as we explained to him, this was natural enough, since that sub stance was not known when he passed his examination. It is even now a somewhat rare “ chemical product,” but neverthe less has been recently prepared as an advantageous substitute for pyrogallic acid in the development of the rapid gelatine plates now so extensively used both by amateur and professional photographers. The latter gentlemen seem to get on very well indeed with pyrogallic acid, but in the hands of amateurs hydroquinon is said to be preferable, as its action is more under control. At the present moment there is no easy and economical method by which hydroquinon, or even quinon (from which it can be made), can be obtained. But we, who passed our exami nation long after Mr. Brown, have a note in our book to the effect that the most direct manner of preparing hydroquinon is by oxidising oxyphenylamine. This is effected by means of bi chromate of potash and sulphuric acid. But where do you get the oxyphenylamine ? some one may ask. This substance is easily produced by the reduction of mono-nitro-phenol. And this substance' inquires another. The starting-point, mono nitro-phenol, is obtained by acting upon carbolic acid (phenol) by nitric acid with certain precautions which are indicated in the books. This would in all probability be the most economi cal method of obtaining hydroquinon.—Chemist and I ruggist. LUMINOUS trees are reported to be growing in a valley near Tuscarora, Nov. At certain seasons the foliage gives out suffi cient light to enable any one near at hand to read small print, while the luminous general effect may be perceived some miles distant. The phenomenon is attributed to parasites.—American Druggist. PHOTOGTAPHTe Club.—The subject for discussion at the next meeting of this Club, on August 26th, will be “ On the Action of Bisulphites in the Developer.” Saturday out-door meeting at Thames Ditton ; trains from Waterloo at 2.17. Uo Oorrespondents. *.* We cannot undertake to return rejected communications. P. H. Davies.—The letter you refer to did not come to hand. You should write to the editor about such matters, not to the publishers. ALPHA Beta.— Fume thoroughly with ammonia, and you will probably experience no difficulty. [AUGUST 21, 1885. B. J. SAYR.—As you say r a gold medal (not a bronze medal) was awarded to you, and this fact is stated quire clearly in the notice you complain of (p. 513). The notice in question is an official one issued by the exhibition authorities, and we suppose that the only fault to find with it is the omission of the name of W. B. Bolton as part inventor; but this omission is a consequence of this gentleman being upon the jury, and, therefore, disqualified from receiving any recognition from this body. W. H.—It is a very serious fault, and as* soon as you have thoroughly proved that it is a general defect running threugh the bulk of the plates, and that it is not due to the use of an over strong solution, or other carelessness on your side, you will doubtless bo in a position to make a claim for your travelling expenses and loss of time. When an article is sold for a certain definite use, there is held to be an implied guarantee that it is fit for such use. Raby.—1. For such work it is always desirable to use a lens of long focus (one having an equivalent focus not less than double the longest measurement of the plate). 2. It is. impossible to give universal rules ; but one of the best guides is an inspection of the image on the ground glass. 3. None of these defects are inherent to such conditions. 1. Only in very exceptional cases. Jas. II. Q.—Perhaps you could do the whole in fairly good style for £500 ; but if your views are modest, the expense would be less. J. A. B.—We have no reason to suppose that anything else is in tended. Amateur Beginner.—You can obtain a handbook of the ferrotype process from Elliott, of 36, Jewin Street; or the Stores, of 43, Charterhouse Square. S. K. Lawton.—1. Thank you for the interesting account of your experiences, which will appear shortly. 2. As a marketable pro cess, the method has probably no value ; but its publication would be a matter of interest to our readers. Shall we publish it in the next Year-Book ? C. W. D. Perrins.—The sulphite of soda was bad—that is to say, largely contaminated with sulphate. This may be due to the fact of it having been exposed for a long time to the air. Thank you for the curious specimen of a phenomenon, often met with, but imperfectly understood ; we shall have some remarks to make on the subject shortly. T. B. (Alston).—We do not give advice by letter, only through the Correspondence column. It commenced on January the 2nd, and will terminate with the year. 2 hotogra ph $ 2 tgistered. Messrs. Adams & Scanlan (High Street, Southampton)—Photo, of General Gordon, with Chinese writing, &c. Mr. Ernest E.WIITE (Weston Villa, Chelthenham) —Photo, of General Gordon. Mr. J. W. T/ITERSAIL (Accrington)—Photo. Group of Accrington Foot Ball Club. Mr. JAMES Simpson (West Arthurlie, Barrhead) —6 Photos, of David Murdock in uniform. Mr. W. Barry (7, Park Street, Hull)—Photo, of Professor Galvayne. Mr. R. Symons (St. Julian Street, Tenby)—Photo, of Channel Fleet and Great Eastern Troopship. Mr. G. Nesbitt (118, High Street, Notting Hill)—Photo, of Statue of a Female. Mr. T. K. Biddle (High Street, Dartford)—Photo, of Sir J. Spilman's Monument. Mr. T. R. Braybrook (Church Square, West Hartlepool)—Photo, of Wesley’s Chapel, West Hartlepool; photo, of Parish Church, Seaton Carew. Mr. W. G Honey (Devizes)—Photo, of the Duke of Cambridge and others; photo, of Wilts. Yeomanry Regiment. Mr. G. Mold (17, Parson Street, Bambury)—Photo, of exterior view of Institute and School of Art, Bambury; photo, of Antique Room of ditto. Mr. H. P. Robinson (Tunbridge Wells)—Photos, entitled “Dawn and Sunset,” “ Hope Deferred,” “ Teaching the Blackbird.” Uhe Photographie Tlews. SUBSCRIPTIONS. Including Postage to any part of the United Kingdom:— Yearly ... 15s. Od [ Half-Yearly ... 7s. 8d. | Quarterly ... 3a. 10d To the United States, the Continent, and the Colonies:— Yearly ... 17s. 4d. | Half-Yearly ... 8s. 8d. | Quarterly ... 4s. 4d To India (Yearly) 19s. 6d. ADVERTISEMENTS IN COLUMN. Not exceeding Five Lines (36 words)... 3s. Od. Each Additional Line Os. 4d. Repeated insertions, and special positions or style, by contract. Advertisements should be forwarded (prepaid) to Piper and CARTER: 5, Castle Street, Holborn, E.C., to reach the office not later than noon on Thursday. A fee of 6d. must be forwarded when the Publishers are expected to receive and forward replies to Advertisements; and when they undertake the receipt of replies, they must be entrusted with the nag and address of advertiser, for revelation to applicants, in case they may eem it necessary. THE photographic news.