Cardboard

Cardboard, or CARD, is made by pasting together several layers of paper, according to the thickness and quality required, the outside sheets being generally white. Bristol-board, used by artists for pen-and-ink drawings, and many other purposes, is made in a similar manner, but of a very much finer quality of paper, and has a beautifully finished surface. According to the number of layers, they are called three, four, six, or eight sheet boards. See MILLBOARD, STRAWBOARD.