The Photographic art-journal . latter will onlybe opened after the decision of the this prize is offered as a test of theskill of manipulators and not the excellenceof the camera, no instrument larger thanthe regular full size must be used. Da-guerreotypes taken by the mammoth ca-mera will be excluded. Artists of all countries are invited tosend pictures for competition. All letters of enquiry upon the subjectwill receive prompt attention, and it isearnestly hoped the competition will be asspirited as possible. All who intend to compete for theprize should send in their names as earl
The Photographic art-journal . latter will onlybe opened after the decision of the this prize is offered as a test of theskill of manipulators and not the excellenceof the camera, no instrument larger thanthe regular full size must be used. Da-guerreotypes taken by the mammoth ca-mera will be excluded. Artists of all countries are invited tosend pictures for competition. All letters of enquiry upon the subjectwill receive prompt attention, and it isearnestly hoped the competition will be asspirited as possible. All who intend to compete for theprize should send in their names as earlyas possible, as lists of the competitors wilifrom time to time be published. The pictures must be forwarded to myaddress, free of expense. E. Anthony. THE PHOTOGRAPHIC ART-JOURNAL Vol. 5. JUNE, 185 3. No. 6 PRACTICAL TREATISE ON PHOTOGRAPHY UPON PAPER AND GLASS AND METALLIC PLATES* TRANSLATED BY MRS. A. L. SNELLING, FROM THE FRENCH OF M, AUBREE, CHEMIST,Associate member of the Linaen Society, Chemical and Physical, of ash the plate in a largequantity of water inorder that no part, ofprecipitate may re-main upon its these operationsshould be made in openday. In this state, the plateis ready, and we can thencalculate the certainty of aresult by the lively intensityof its color, which ought tobe golden, if the operationsare successful. It can bepreserved for months with-out alteration. At the moment of operatingin the dark camera, the plate isrendered sensible as usual bythe aceto -nitrate of silver, which may thenwithout inconvenience be poured on, dropby drop, the albumen being coagulated inadvance, the acetic acid has no longer anyactioD. I shall shortly have occasion to returnto this subject, and to speak more atlength in presenting in the terms of theprogramme of the Society, some specimensof large pictures upon glass, and uponpaper. I have the honor of being ap-pointed by the Solicitor of the Society, thepermission to take part in a series of lec-tures,
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectphotogr, bookyear1851
