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256 THE PHOTOGRAPHIC NEWS. [March 27, 1891. then the following members exhibited their work : Messrs. Wall, Mummery, Cox, Smith, Chang, Marchant, Ainsley, and Gill. The slides comprised snow scenes, forest glades, wood land nooks, and silent pools, mountain glens, pastoral scenes with the cattle knee deep in the long bush grass, the quays and bridges of busy seaports, barges with towering sails gliding placidly along the sedgy broads, solemn minster aisles, and the excited throng of the race-course, the bustle of city life alternated with quiet home scenes and sleepy villages. The Croydon Microscopical and Natural History Club (Photographic Section). March 20th was a lantern night, when Mr. Edward Lovett presided, and 200 slides were put through the lantern, the work of members, viz. Messrs. Baldock, A. H. Allen (animal studies), Coldwells, J. A. Carter, Mariott, C. F. Oakley, W. Goode, A. W. Hurst, A. S. Wild, and W. Low Sarjeant. Messrs. Carter and Mariott showed some slides of the recent severe snowfall, and Mr. F. C. Oakley also put on the screen some photo-micrographs of rock sections taken by polarised light. The next ordinary meeting will be held in the old school of art room on Apiil 3rd, when Mr. A. R. Dresser will read a paper entitled, “ The After Part of Hand-Camera Negatives” (illustrated). The Enfield Camera Club. The ordinary meeting of the Enfield Camera Club was held on Wednesday evening, the 18th inst. Dr. F. Cresswell showed the capabilities of the process un fortunately called “ kallitype ” to a large number of members. The demonstration, which was an exhaustive one—some dozens of prints were developed—-was a full explanation of the princi ples of production given. Mr. Otto Schblzig sent samples of Dr. Jacoby’s chloride of silver emulsion paper. Four new members were elected, and it was resolved that two delegates from the Club should attend the adjourned meeting for the proposed federation of London photographic societies. The Richmond Amateur Photographic Society. March 26th.—Mr. Ennis in the chair. Mr. ARDASEER introduced the subject of " Development and Developers." He touched upon the theory of the action of light upon the sensitive surface and the development of the latent image ; noticed the different action in the development of wet and dry plates ; explained the functions of the various ingredients employed in development ; and enlarged upon the advantages of slow development, of re-development in certain cases, and of the judicious use of certain dodges, such as the use of the brush, intentional fogging, and intentional staining, and others. Mr. Cembrano mentioned that, in cases of under-exposure, he had used with advantage re-development with hydroquinone after eikonogen, the latter giving detail, the former density. The Photographic Club.—On April 1st, the adjourned discussion on shutters. The Bank Holiday outing will be to Leigh, near Southend ; members meet at the booking office, L. T. & S. Railway, Fenchurch Street Station, at 9.45 ; re turn ticket (to Southend) 2s. 6d. Photographers’ Benevolent Association.—March 18th, Mr. W. Bedford chairman. Two grants were considered and assistance granted. The following were elected as sub scribers, viz., Messrs. Hargreaves, Matthews, Kerr, Misses Howe, Haigh, and Clarke. We have been informed that perhaps such great purity of the mercury for M. Lippmann’s process as mentioned in these pages a few days ago may possibly not be necessary, but that Mr. Warnerke used a film which probably contained an undecomposed soluble'silver salt, and did not employ spectrum colours. Answers to Correspondents. All Cmmunications, except advertisements, intended for publication, should be addressed to the Editor of the PHorogRaPHIc News, 6, Furnival Street, London, E.C. All questions requiring a reply in this column should be addressed to Mr. John Spiller, E.O.S., 2, St. Mary’s Road, Canonbury, London, N. All Advertisements and communications relating to money matters, and or the sale of the paper, should be addressed to the Publishers of the Photookaphic News, Messrs. Piper & Carter, 5, Furnival Street, London. The Photooraphic News is the oldest weekly photographic newspaper. See its consecutive number to-day on the front page. Viator.—Federation of Photographic Societies. A joint com mittee, presided over by Mr. L. M. Biden, has this matter in hand, and your suggestions should be laid before that gentleman (c/o Assistant Secretary, Photographic Society, 50, Great Russell Street, W.C.). The Association Beige de Photographic has such a constitution, meeting at Brussels, Antwerp, Liege, and Ghent, and so, likewise, has the British Association for the Advancement of Science, so far as the reception of country delegates is concerned. The Society of Chemical Industry (2,600 members) is composed of five or six sections, meeting in different centres, with head-quarters in London. The Bulletin Beige and the Jour. Soc. Chern. Industry provide reports for all, but this fact does not stand in the way of the proceedings being farther discussed by in dependent journals. W. S. B. (Boston, Mass.)—Life-Sized Heads. Mr. H. H. Hay Cameron writes to say that most of the large portraits taken by his late mother were done with Jamin’s lens, but she also used a large rapid rectilinear by Dallmeyer. As is well known, Mrs. Cameron aimed at art excellence in her work, rather than being pinned down to sharp optical definition, so that the lens employed was not, after all, a very important consideration. As previously reported, Messrs. J. Chaffin and Sons, of Yeovil, used a Jamin lens, whilst Messrs. Robinson and Cherrill employed a 7d Dallmeyer for their respective Crawshay prize portrait heads. F. Smith.—Registration of Designs. Our publishers will undertake to lodge your specification and design on sending them thirteen stamps. There seems a doubt, however, whether the main feature of your plan will be new, but the motto may carry it. F. D. T. (Edinburgh).—Mungo Ponton's Portrait. There was no mistake in the reference. Be so good as to look again at the News of February 27th, top of last coloum, where it is said to form “ the frontispiece of the Year-Book for 1882.” We should be glad to see the details of your exchange scheme, which ought to interest those of us who are south of the Tweed. A. M. M.—Cost of Materials and Wages. Your letter to hand ; but, as we go to press so early; there is no time for calcula tions of even greater difficulty than those given in our last. Leave the matter with us to think well over before reply. H. J. B.—Mr. Benham’s Death. We called on Wednesday at Mr. Benham’s office, and when your letter came to say that he died on that same evening, whilst the committee of the Photographers’ Benevolent Association were assembled in his office, we experienced a most painful feeling of regret, which will be shared by all who are aware of the self-sacrificing labours of our amiable colleague, the late honorary solicitor. A Correspondent reports that he has just developed a six years’ old portrait exposure on a dry plate, and that instead of getting a negative, the image came out as a transparency, which shows, moreover, traces of colour indications. F. C. S.—-Cantor Lectures, <kc. The lectures recently delivered at the Society of Arts by Capt. Abney and Prof. Meldola respectively will be published later on, in the summer recess. Subscriptions in the Pqotographic Eeks, Including Postage to any part of the United Kingdom :— Yearly...15s. Od. | Half-Yearly...7s. 8d. | Quarterly... 3s. Od. To the United .States, the Continent, and the Colonies :— Yearly...17s. Id. | Half-Yearly...8s. 8d. | Quarterly... Is. Id. To India (Yearly) ... ... ... 19s. 6d,