Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . less spherical sacs, in which are developed a vastnumber of minute bodies resembling Naviculce in shape, whence theyare called navicella-sacs. But of these minute parasitic monadsmore will be said in the Lecture on Entozoa. In the ciliatedPolygastria conjugation has been observed to take place in the genusActi7iophrys^, i. e., two individuals of , have been observed to unite, coalesce, andbecome one. The same has been recordedof species of Epistylis and of Vorticel
Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . less spherical sacs, in which are developed a vastnumber of minute bodies resembling Naviculce in shape, whence theyare called navicella-sacs. But of these minute parasitic monadsmore will be said in the Lecture on Entozoa. In the ciliatedPolygastria conjugation has been observed to take place in the genusActi7iophrys^, i. e., two individuals of , have been observed to unite, coalesce, andbecome one. The same has been recordedof species of Epistylis and of Vorticella. With regard to the more common fissi-parous mode of multiplication, Ehrenberghas figured gradations of this spontaneousdivision of the organised contents of theintegument in the Go7iium {Jig. 16.) andChamydomonas {fig. 17.), which may becompared with the earliest stages of the development of the germ, as figured by Siebold in theStrongylus and Medusa, by Baerin the frog, and by Barry in therabbit; who, in 1841, remarked: On examining the figures givenby Ehrenberg of successive genera-tions of the Chlamydomonas { Gonium.
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1850
