In this collage, the center of which features an anatomic view of the lungs, surrounding images depict the internal combustion engine, chemical experiments, mechanical and measuring instruments, and a map. The overall effect is to create in the viewer a perception that the lungs are like an engine which burns oxygen to enable the body to function just like a the internal combustion engine burns gasoline to power a car. -- Source of annotation: Marvin or Ruth Sackner.