Artificial Light.—We have just introduced this most important facility, which enables us to prosecute our work in cloudy weather, and to push forward hurried orders in the night.
References.—Our plates are now used by the principal publishers in this city, and by most of the leading houses in every State in the Union.
Our General Circular contains a few specimens of the various kinds of our work, and will be sent on receipt of stamp. We have just prepared five special circulars, as follows:
| No. 1. | Portraits and Figures. |
| No. 2. | Buildings and Landscapes. |
| No. 3. | Machinery and Apparatus. |
| No. 4. | Maps, Autographs, and Ornamental Lettering. |
| No. 5. | Reproductions from Wood-Cuts, Steel-Plate Prints, and Lithographs. |
These will be furnished at ten cents each.