Drawing is the technique of producing images on a surface, usually paper, by means of marks, usually of ink, graphite, chalk, charcoal, or crayon. Although drawings differ in quality, they have a common purposeto give visible form to an idea and to express the artist's feeling about it. Besides the way in which they feel about their subjects, artists reflect in their drawing their individual approaches to techniques and tools. In line drawings, for example, form is usually expressed by line only. This volume deals with drawings' aesthetic characteristics, mediums of expression, subject matter, and some leading artists and their works.