Page:TheAmericanCarbonManual.djvu/110

 which we may secure uniform and elegant carbon prints, yet he has not given us all we want. What is needed to make the carbon entirely supersede the silver process, is a direct carbon printing process—one that will enable us to print directly upon a permanent surface without the necessity of making transfers.

Mr. V. M. Griswold, Peekskill, N. Y., has been experimenting in this direction for the last three years with varied success, persistently overcoming one difficulty after another, until he is able to produce passable results always, and very fine and promising ones in some cases. He has shown us prints which possess elegant detail and half-tone, yet lacking purity in the whites and brilliancy. His principal trouble seems to be in the matter of exposure, and to discover the best method of sensitizing his paper or other medium. The prints we have seen are of cabinet size, larger and smaller, upon iron and paper. He secures them with equal facility upon wood, canvas, silk, etc.

The details of his process are not yet made public. We are assured that it is based upon an entirely new and beautiful principle, as well as quite an original one.

To avoid the transferring, Mr. M. Carey Lea recommends printing through or upon glass by reflected light. He places the frame, holding the negative and the pigmented glass, against the wall beside the window at which the sun enters. A mirror is then so placed that the rays fall upon it almost perpendicularly, and are reflected upon the frame. After printing, all that is necessary is to wash off the superfluous pigment, and the picture is finished.

Here we leave this wonderful process, for the experimenter to follow up and perfect.