A Book of Exposition

The collection presents a set of expository essays chosen as models for explaining mechanisms, processes, and ideas across fields such as anatomy, zoology, physics, psychology, and applied science. Selections describe the human body's lever systems, the operation and distribution mechanisms of a composing machine, a natural-process study of a pest, modern paper-making, and essays on relaxation and reconciling science with religion. Each piece is longer than typical classroom extracts, includes biographical and critical notes, and is arranged to suggest thematic unity while giving instructors flexibility in assignment and classroom treatment.