Release date is 2023-09-18

Protozoa, by Marcus Hartog -- Porifera (sponges), by Igerna B.J. Sollas -- Coelenterata & Ctenophora, by S.J. Hickson -- Echinodermata, by E.W. MacBride.

Keith Edkins, Peter Becker and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)

"The Cambridge Natural History, Vol. 01 (of 10)" by Marcus Hartog et al. is a scientific publication written in the early 20th century. This volume delves into the intricacies of various lower life forms, specifically focusing on the Protozoa, along with sections on Porifera (sponges), Coelenterata, Ctenophora, and Echinodermata. It likely appeals to those interested in biology, zoology, and the fundamental characteristics of early life forms. At the start of this volume, the authors introduce the concept of protozoa, differentiating them from the more complex structures found in higher animals and plants. They discuss the nature of protoplasm, describing its behavior, forms, and the processes of cell division. The text emphasizes the significance of protozoa, such as Amoeba, in understanding vital processes like motility, nutrition, growth, and reproduction, laying a foundation for a detailed exploration of these entities throughout the work. (This is an automatically generated summary.)

Originally published: New York: MacMillan & Co., 1906