. The Protozoa. Protozoa. c. Fig. 12. — Ectoplasmic modifications. A. Amceba tentaculata. [GRUBER.] B. Clepsidrina munieri. [SCHEWIAKOFF.] C. Tri- chocysts. [SCHEWIAKOFF.] D. Nematocysts from the sporozoon Myxolwlus. [Balbiani.] Et Ft G, attaching hooks and spines from different Gregarinida. [Wasielewskv.] mals, the protozoan body has the power of forming by chemical pro- cesses over and above those which relate merely to nutrition, various products which are secreted just within the peripheral plasm, where they usually form a protective armor in the shape of shells, tests, or "
. The Protozoa. Protozoa. c. Fig. 12. — Ectoplasmic modifications. A. Amceba tentaculata. [GRUBER.] B. Clepsidrina munieri. [SCHEWIAKOFF.] C. Tri- chocysts. [SCHEWIAKOFF.] D. Nematocysts from the sporozoon Myxolwlus. [Balbiani.] Et Ft G, attaching hooks and spines from different Gregarinida. [Wasielewskv.] mals, the protozoan body has the power of forming by chemical pro- cesses over and above those which relate merely to nutrition, various products which are secreted just within the peripheral plasm, where they usually form a protective armor in the shape of shells, tests, or "; The materials thus formed within the cell-body may be cliitin (composed of C, H, N, and O, and supposed to be a deriva- tive from carbohydrates, but the exact formula is in dispute), cellulose. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. New York, The Macmillan company; London, Mamcillan & co. , ltd.
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