Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 RlITZOrODA. 183 by surrounding and transporting into the interior of the body small vegetable organisms .3 Bacillaria. Among the shell-bearing forms, the reception and digestion of food takes place outside the shell in the peripheral threads and networks of sarcode ; for each spot on the surface can for the time being assume the functions of mouth, and • mi i i / > / •:! -1 / / / / : / / / / ! ! Ill-/ / //'/iA'M
Elementary text-book of zoology, tr Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 RlITZOrODA. 183 by surrounding and transporting into the interior of the body small vegetable organisms .3 Bacillaria. Among the shell-bearing forms, the reception and digestion of food takes place outside the shell in the peripheral threads and networks of sarcode ; for each spot on the surface can for the time being assume the functions of mouth, and • mi i i / > / •:! -1 / / / / : / / / / ! ! Ill-/ / //'/iA'M i i\\ •••'•. \ ^ *y \ lu v\\x Vv FIG. Botalia (after M. Schultze), with a DIaton taken in the network of Pseudopoclia. also of anus, by rejecting the undigested remnant?. The Rhizopoda live for the most part in the sea, and contribute by the accumulation of their shells to the formation of the sea sand, and even to the deposition of thick strata. An innumerable quantity of fossil forms from various and very ancient formations are known.
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