G. H. Korff, of Hoboken, N. J., has invented a new press for the purpose of zincographic printing. It is a cylinder press, the face of the cylinder being of zinc, and on this the design is drawn ; around the cylinder there are arranged damping and inking rollers, which perform the operations hitherto done by hand. These are combined with feed and pressure rollers, so that a rotary power press is obtained of great simplicity and value. It was patented this week, and the claim will be found on another page.