Frank Overton

CHAPTER I CELLS Our body is made of many parts. Its head thinks. Its legs carry it, and its arms and hands take hold of things. The leg cannot do the work of the arm, nor the head do the work of the hand; but each part does only its own work. 1. The simplest animal.—Some animals have parts like a man's; but these parts are fewer. No animal has arms or hands like a man. A fish has little fins in... more...