Rhythmic Activity of Fishes

Pp. x, 312; numerous text-figures.  Publisher’s original light blue cloth, lettered in silver on the spine, lg 8vo.  The volume attempts to understand how the rhythmic patterns on the Earth – such as the elliptical path of the earth’s annual revolution around the sun, its daily axial revolution and the moon’s daily revolution around the earth – affect the activities of fishes.  The work contains 21 chapters by noted authorities in the field addressing these issues.  No ownership marks.