National Geographic : 1920 Mar
238 THE NATIONAL GEOGRAPHIC MAGAZINE IN THE COATING-ROOM This picture shows the rolls of paper made on the machine shown on page 237, just starting on the coating-machines. The paper passes through a bath of coating material; then through felt-covered rolls; then between vibrating brushes, which lay the coating material evenly and smoothly on the paper. It then passes out at the left into the drying-room (see following illustration). THE DRYING-ROOM IN THE COATING MILL AT LAWRENCE, MASS. After the paper has received its coating from the coating-machine shown in the previous picture, it passes in a continuous web to the drying-room. Blasts of hot air coming out of galvanized ducts beneath support it for a distance of 100 feet, until it reaches the drying chamber in the rear of the room. Here it hangs in festoons much like those of cotton cloth shown on page 219. In the picture the paper is passing from right to left. After leaving the drying-room it is wound on rolls, as shown in the next picture.