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OPALINA (so named by J. E. Purkinje a...

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Originally appearing in Volume V20, Page 121 of the 1911 Encyclopedia Britannica.

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OPALINA (so named by J. E. Purkinje and G. Valentin)

OPALINA (so named by J. E. Purkinje and G. Valentin) , a genus of

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PROTOZOA (Gr. 7rpwros, first, and i'woe, living thing)

Protozoa, without mouth or contractile vacuole, covered with nearly equal flagelliform

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CILIA (plural of Lat. cilium, eyelash)

cilia, and possessing numerous nuclei, all similar . It has been referred to Aspirotricha by Biitschli, but by M . Hartog (

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Cambridge Natural

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HISTORY

History, vol. ii., 1906) has been transferred to the Flagellates (q.v.) . All the

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SPECIES

species are parasitic in

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COLD (in O. Eng. cald and ceald, a word coming ultimately from a root cognate with the Lat. gelu, gelidus, and common in the Teutonic languages, which usually have two distinct forms for the substantive and the adjective, cf. Ger. Kolte, kalt, Dutch koude

cold-blooded Vertebrates . See Bezzenberger in Archiv. f . Protistenkunde (1903), iii . 138 .

End of Article: OPALINA (so named by J. E. Purkinje and G. Valentin)

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