CHAPTER XVIII
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PROTOZOA.
The Foraminifera.--The Amœbæ.--Their Wonderful Simplicity of Structure.--The Polycystina.--Marine Infusoria.--Sponges. --Their Pores.--Fibres and Spiculæ.--The Common Sponge of Commerce 378
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The Sea and Its Living Wonders: A Popular Account of the Marvels of the Deep and of the Progress of Martime Discovery from the Earliest Ages to the Present Time
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PROTOZOA.
The Foraminifera.--The Amœbæ.--Their Wonderful Simplicity of Structure.--The Polycystina.--Marine Infusoria.--Sponges. --Their Pores.--Fibres and Spiculæ.--The Common Sponge of Commerce 378
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