CodalSearch this book — or all of Codal…⌘K
nydus/On Growth and FormPublic
Page 600 of 959
Table of Contents

CHAPTER XI THE LOGARITHMIC SPIRAL

very little indeed in the magnitude of the spiral angle öÝ, that is to say in the relative velocities of radial and tangential growth. It is upon the angle ö¡

Two longitudinal cross-sections of a conical, chambered gastropod shell, showing its internal spiral structure.

that the difference in their form mainly depends:

600