An introduction to the study of the comparative anatomy of animals . A. Fig- 32-A^ a free specimen of Monocystis a^Hs, nu, nucleus. 5, sperm-motber cells adhering to the parasite, i), a free monocystiscovered with ripe spermatozoa, and thus appearing as if coveredwith a coat of long cilia. C, a ripe cyst of Monocystis agiliscontainingnumerouspseudonavicellae/.rff. {A and .5, original;C, after Lankester.) is termed a zygote (Greek C^y^, a yoke, because the twoare yoked or joined together). The zygotes contract intospherical form, and each contributes to the formation of acommon transparent prot
An introduction to the study of the comparative anatomy of animals . A. Fig- 32-A^ a free specimen of Monocystis a^Hs, nu, nucleus. 5, sperm-motber cells adhering to the parasite, i), a free monocystiscovered with ripe spermatozoa, and thus appearing as if coveredwith a coat of long cilia. C, a ripe cyst of Monocystis agiliscontainingnumerouspseudonavicellae/.rff. {A and .5, original;C, after Lankester.) is termed a zygote (Greek C^y^, a yoke, because the twoare yoked or joined together). The zygotes contract intospherical form, and each contributes to the formation of acommon transparent protective case or cyst-wall, composedof chitin-like substance. At first the contours of the cyst Digitized by Microsoft® 156 COMPARATIVE ANATOMY wall betray its double origin, but it soon becomes spherical,and forms a single chamber, containing the two closely-apposedzygotes. These are separated by a sharp Hne of divisionat the surface of contact, and, whilst the cyst-wall is beingformed, each forms within its substance a number of minutehighly-refracting granules, whi
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1900
