edge of the body, and place that, edge down, to facilitate the drainage; when dry, place the negative impression (which must previously have been obtained, by the use of the camera, either on collodion or albumen upon glass or upon paper) upon the body or ground to receive the impression in the position the picture is desired, with the face of the negative to the surface of the body to receive the impression. If the negative impression does not cover the whole surface, then a mat should be used so as to extend to the edge of the ground on all sides. Expose to the light, and, when sufficiently long, remove the negative into a dark room (lighted with a feeble lamp); dash over the impression a weak solution of hyposulphite of soda, and let stand a few moments; then wash off with a very dilute acid of only sufficient strength to neutralize the alkalies remaining upon the surface, usually five or six drops of sulphuric acid to an oz. of water is sufficient. What I claim as my own invention and discovery, and desire to secure by Letters Patent, is the mode of preparing and rendering oil (oroleaginous) bodies, grounds, or surfaces impressible or sensitive to the Photographic art by the temporary destruction or chemical change of the oil or oleaginous matter of the immediate surface only, by the use of spirits of wine and alkaline solution, or their equivalents, and, after fixing the impression by the use of hyposulphate of soda, the use of dilute acid, by which last application the alkalies are neutralized and the oil restored with the impression permanent upon the surface. Disclaiming everything heretofore known in the production of Photographic pictures upon paper or any unoiled body or surface. Joel Haywood Tatum. _Witnesses._ J. S. Hollingshead, } E. G. Handy. } Original, _dated April, 15. 1856_. Re-issue, _dated May 13, 1856_. * * * * * PATENT FOR MAKING THE BORDER OF THE PICTURE TRANSPARENT, AND PLACING THE MAT BACK OF THE PICTURE. _To all whom it may concern:_ Be it known that we, Albert Bisbee, of Columbus, in the County of Franklin and State of Ohio, and Y. Day, of Nashville, in the County of Davidson and State of Tennessee, have invented certain new and useful improvements in photographic pictures on glass, and we do hereby declare the following to be a full, clear and exact description of the same. The nature of our invention consists in making the edges of the coating or film on the glass transparent so that the picture is made only on the central part of the glass, and extending so far as to meet the inside edge of the mat or border, generally used in putting up such pictures, and then placing the mat back of the picture. To enable others skilled in the art to make and use our invention, we will proceed to describe the same as follows:--