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nydus/On Growth and FormPublic
Page 252 of 959
Table of Contents

CHAPTER V THE FORMS OF CELLS

of unduloid forms may be traced in even greater variety among various other families or genera of the

A series of eleven line drawings illustrating variations in the bell-shaped forms of Vorticella protozoa.
A collection of diverse, flask-shaped biological microstructures depicted in an engraving from D'Arcy Thompson's work.

Infusoria. Sometimes, as in Vorticella itself, the unduloid is seen merely in the contour of the soft semifluid body of the living animal. At other times, as in Salpingoeca, Tintinnus, and many

A black-and-white sketch of a simple, cylindrical vase-like form with a rounded base.

other genera, we have a distinct membranous cup, separate from the

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