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THE PHOTOGRAPHIC NEWS. Vol. XV. No. 690.—November 24, 1871. CONTENTS. PAGK The Blanchard Brush for Applying Solutions 553 Surreptitious Portraits 553 The Photographic Exhibition 554 The Alum Silver Bath 555 Lantern Hints.—No. 2. By Janies Martin 555 A New Photo-mechanical Printing Process. By Captain Waterhouse 556 On the Effect of Sensitizers in'the Dry Process. By Dr. Schultz 557 Photographic Reproductions of Oil Paintings. By M. Scamoni 558 Pag Photographic Geoplasty 558 Preservation of Sensitized Paper 558 On Printing. By Charles Wager Hull 559 Photographs Unmounted for Books. By C. A. S 560 Permanent Photographs on Glass 561 Correspondence.—The Collodio-bromide Process 0. Col. Wortley —Caution to Photographers—Photo-collographic Printing 562 Talk in the Studio. 563 To Correspondents 564 .appears as the author of dire mischief, by photographing Here is the narra- stopped for a few moments to speak, tive as we find it in the daily press. three inches broad, and four or five inches long. On one end is fastened a loop of swans’-down calico—a cotton mate rial, twilled on one side, and with a long plush-like nap on the other. It is to be obtained at any large draper’s. The nap side must be outwards ; two thicknesses will be found better than one ; and the loop can be readily fastened to the end of the glass by a small elastic band. “ This brush will be found much more useful in the calo type process for enlargements than the ‘ Buckle brush,’ for it can be made of any width, and the silver and gallic acid solutions can be spread with the most perfect uni formity by its aid.” LAMBETH.—A Photographic Difficulty.—Ann Tasker summoned her husband for using threatening language towards her. From the statement of the solicitor for the complainant, it appeared the parties had been married some six years, the woman being twenty-five years younger than defendant. A few weeks ago she went to the Borough in company with a young girl who was in her service. The girl entered a shop to pur chase a hat, leaving Mrs. Tasker outside, when a young man named Blowers came up, and, knowing plaintiff, stopped for a few moments to speak. During this period an itinerant photo graphic artist came along with his apparatus, and before plain tiff and Blowers were aware of it they had their photographs taken. The artist then came up, and so delighted was Blowers with the likenesses that he purchased a copy, and gave the same to plaintiff. She took it home and put it in a drawer, where her husband found it, and declared it had been done at Margate or Ramsgate on the sands, where he accused her of having goue with Blowers. Ever since that he had shown a very jealous disposition, and had threatened to dash out her brains with a poker. The legal gentlemen on both sides, after a consultation THE BLANCHARD BRUSH FOR APPLYING SOLUTIONS. Allusion has been made recently in various articles, letters, and reports, to a useful little instrument which has been designated the “Blanchard brush.” This contri vance, which combines in an eminent degree simplicity and efficiency, is of very great value in applying various kinds of photographic solutions. It was originally em ployed by Mr. Valentine Blanchard in applying both silver solutions and developing solutions to enlargements on paper. Besides its general convenience in evenly spread lag the solution, it was found of special value in the pro cess of development, as it gave to the operator a kind of local power in controlling the action of the developer. Where a mass of shadow required great depth to give force to the picture, tne energy of the development could be increased by a little manipulation, and a little nitrate of silver added with the brush. Its latest use has been in connection with the application of preliminary coating of dilute albumen to glass plates. All difficulty in spreading the albumen solution, usually a troublesome operation, vanishes when this brush is employed. One sweep of the brush, which may be made of any width, covers the plate evenly, without irregularity, bubbles, or any kind of drawback. SURREPTITIOUS PORTRAITS. Amongst the many sins for which photography has been made answerable, not the least, we fear, will be that series in which it is charged with giving birth to that green-eyed monster which separates loving hearts, desolates homes, and fills the divorce court. The surreptitious possession of photographs has already at divers times led to lovers’ quarrels, and occasionally to domestic broils, and it has been alleged by wicked persons that it is not an un common thing on race courses for itinerant photographers to secure positives of groups in carriages, and sell them at a high price to those concerned in destroying the evidence they furnish. A case recently came before the a little sketch which will explain at once this very simple contrivance. All that is needed is a strip of glass two or Although it has been described before, and is very simple in construction, we bave reason to think that it is ,1 , not so generally known as it might be. Mr. Blanchard has, Lambeth I olice Court in which the itinerant photographer +L...e c • i P.c • i* 1’1 enNee-e na +ho onthnr nr dinn mianhief htr nhntnoyonhino -nererore, favoured us with a brief description, which we".. . - - . . - subjoin, together with a diagram, making the matter quite a group in the street, who had met .and incidentally clear Mr. Blanchard says ’ etnnnen for a ew moments tn eneo ere 1S the narra. “A short time ago Lieut. Abney, in speaking of my method of albumenizing plates, spoke of the simple contri vance I employed, as the ‘ Blanchard brush.’ Since then I have had several applications from wholesale houses, who have imagined it an article manufactured for sale, and so many letters asking for further particulars, that in self- defence (for I hate lengthened correspondence), I have sent