Morning Herald

The New Art.—We saw, the other day, in Chilton's, in Broadway, a very curious specimen of the new mode, recently invented by Daguerre in Paris, of taking on copper the exact resemblances of scenes and living objects, through the medium of the sun's rays reflected in a camera obscura. The scene embraces a part of St. Paul's church, and the surrounding shrubbery and houses, with a corner of the Astor House, and, for aught we know, Stetson looking out of a window, telling a joke about Davy Crockett. All this is represented on a small piece of copper equal in size to a miniature painting.

It seems that for an annuity of $1200 a year, paid by the French Government, the inventor, in Paris, agreed to make public the process of taking such miniature pictures. Mr. Segur, of this city, on this description, set to work his powers, and, about three days ago, succeeded in making the experiment. The process is as follows:—First, take a small sheet of pure copper, of the dimensions of the picture to be represented—Second, let the surface of this sheet be silvered over and diluted with nitric acid—Third, let the sheet thus silvered be exposed to the vapor of iodine for a short time—Fourth, place the sheet thus prepared in a camera obscura, for eight or ten minutes, directed to the objects to be represented, in the clear sun light—in Europe a longer exposure is required, because an American sun shines brighter than the European—Fifth, remove the sheet at the expiration of eight or ten minutes, and expose the surface to the vapor of mercury heated to 167 degrees, which brings out the original colors communicated from the objects to the sheet, through the agency of the rays of light—Sixth, and lastly, throw over the surface of the sheet a slight covering of hyposulphite of soda, to give the picture a durability, and then wash it in distilled water, and the ingenious process is ended.

The specimen at Chilton's is a most remarkable gem in its way. It looks like fairy work, and changes its colors like a chameleon, according to the hue of the approximating objects. Ladies, if they are pretty, with small feet and delicate hands, fond of science, ought to call and see it. It is the first time that the rays of the sun were ever caught on this continent, and imprisoned, in all their glory and beauty, in a morocco case, with golden clasps.