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June 5, 1885.J THE PHOTOGRAPHIC NEWS. 361 photography are sometimes puzzled how to arrive at the exact measurements which, when made smaller, will result in a photograph of a given size. The plan, however, is a very simple one. Supposing the photograph required is to measure eight inches by six, all that is necessary to be done is to mark off a parallelogram eight by six, and bisect it by a diagonal. This diagonal, if prolonged, will give proportional or homologous parallelograms enlarged to any size the artist may desire. The above figure will ex plain what we mean. M. Feyen Perrin, the painter of a very pretty picture of a fisher girl in this year’s Salon, is more fortunate than Mr. Rossi, the artist who was lately charged by Mr- Vander Weyde with infringing the copyright in a photo graph of Miss Mary Anderson. Mr. Rossi’s defence was that another lady sat for the supposed portrait; the magis trate, however, held there had been a colourable imitation of Miss Anderson’s photograph, and ruled against him. In the case of M. Feyen Perrin’s picture it was alleged by a merchant that the portrait of the fisher girl was the por trait of his wife, and he insisted upon the artist altering the face. This M. Feyen Perrin did, but not sufficiently to satisfy the husband, who demanded that the picture should be removed from the gallery; ultimately the matter was referred to arbitration, and the decision was that the picture did not resemble the lady in question, and therefore it should be allowed to remain in the Salon. The point opens up some rather curious reflections. Resemblances in features are by no means uncommon, and one scarcely dares to imagine what would be the result, supposing a jealous husband detected the likeness of his wife in any of the Royal Academy pictures, which have recently so excited the indignation of the " British matron.’’ A photographer who numbers among his pupils several ladies, was startled the other day by one of them—a lady of a decidedly uncertain age—speaking of the camera limbs. She was far too modest to say “ camera legs.” After this we should not be surprised to hear of such re finements as io-cursing for focussing, demon-oper for devel oper, and pyio-girlic for pyrogallic 1 It will be well if the hosts of candidates who have been let loose upon the Metropolitan constituencies in view of the changes which the Redistribution Bill will bring about enlist the aid of photography. As a matter of fact, electors just now are terribly confused and puzzled how to identify the various aspirants for Parliamentary honours. In the late contest for the American Presidency, some millions of photographs of the candidates were distributed, and this method of canvassing is also a favourite one with the Buonapartist section, who, from time to time, issue floods of photographs of the leaders. It is pretty certain that you feel more interest in a man when you are acquainted with his features, and we fancy that a judicious expenditure in the way of photographs would be a profit able investment on the part of any Parliamentary candi date, especially if he be at all presentable. Photography is often the means of revealing some very awkward facts. The Empress of Austria, for instance, cannot feel very pleased at her photograph with autograph attached, being one of the objects of curiosity at the sale of the effects of one of the leaders of the Paris demi-monde, whose establishment was conducted on a princely scale. The lady in question was an intimate friend of a well- known equestrienne patronised by the Empress, and fre quently met the latter at circus rehearsals. The “ tell tale image,” drulh remarks, was forgotten by the soubretle, who was careful to empty all the photographic albums of their contents before the world of fashion were admitted to the private view. Thereby much scandal was saved. ntelligence. Applications for Letters Patent. 6526. HARRY J. Bovill, Grove Park, Chiswick, and John Aloysius BRODER, 4, Brunswick Gardens, Kensington, Middle sex, for “ The improvement of Horsey and other tobacco pouches, called ‘ The Album Photo Pouch.’ ”—29th May, 1885. 6583. John William Ramsden, 2, East Parade, Leeds, for “ Im provements in tripod stands for photographic, surveying, and other purposes.”—30th May, 1885. Amended Specification. 12,752*. H. E. Newton (Chardon).—" Printing from engraved plates.” METEOROLOGY FOR PHOTOGRAPHERS. BY J. VINCENT ELSDEN, B.S.C. (LOND.), E.C.S. Chapter I.—Introduction—Connection between Mete orology and Photography—Definition and Scope— The Atmosphere : its Extent and Composition. Perhaps no two sciences arc more reciprocally important than meteorology and photography, for while the former receives immense assistance from photography in the various automatic methods of making continuous records of variations in temperature, pressure, and other atmo spheric conditions, the success of the latter is influenced in almost every detail by those atmospheric changes which are generally included in the term uxatber. The two sciences resemble each other, also, in their comparatively recent and rapid development, and in the great field which yet remains open for further advances and future discoveries. It is true that our knowledge of mete orology is rapidly attaining that degree of perfection which almost reaches the power of prediction; but its future progress will depend, in a great measure, upon the assist ance which it may receive from careful observations taken at every available spot upon the earth’s surface, an assist ance which many photographers are exceptionally fitted to render. With these objects in view, therefore, it will be useful to examine, in a few short chapters, the present state of the science of meteorology, dwelling at greater length upon those points which are of more particular interest to the photographer.