Page:Popular Science Monthly Volume 45.djvu/330

 positive, and corresponds closely with the wood itself in its light and dark parts.

The first essential in getting prints of woods is to obtain uniformly thin sections of the wood. These are not far to seek, for Mr. R. B. Hough has become famous for his wood sections. The



process by which he is able to obtain his beautiful sections is not known to the writer; but to him thanks are due for the specimens which have been used in making the prints to illustrate this paper. Having glanced at the two mentioned engravings and remembering that very much of the fineness of detail is necessarily lost in the engraving process, the reader is ready to consider the method of making the prints. The sections of wood having been secured, the only other things needful are a few "printing frames" (one will answer) of the ordinary sort used by photographers. Instead of the glass negative which the photographer uses and has prepared in the dark room, a simple plain pane of glass is needed. This is placed in the frame; upon it is put the section of wood, and over the latter a sheet of the sensitized paper. This paper is brought close upon the wood by means of the clamps, and the frame is ready to be placed in the sunlight. After the print is