. On the anatomy of vertebrates [electronic resource] . Ovum, more advanced in the ovi-duct, Rabbit; niagu. 350 diam. CCLXl. 564 one or two minute granular or oil-. in the surround- 562, like bodies may appearing A division of the primary embryo-cell,with mutual repulsion of the two second-ary ones, is followed by cleavage of theentire yolk, through attraction round eachsecondary cell, fig. 563, of the parti-cles contiguous thereto. A repetition ofthis process issues in the four divisions ofthe germ-yolk, fig. 564 ; then in the eight,on until the whole is worked up into a 1 cclxi, ccxl
. On the anatomy of vertebrates [electronic resource] . Ovum, more advanced in the ovi-duct, Rabbit; niagu. 350 diam. CCLXl. 564 one or two minute granular or oil-. in the surround- 562, like bodies may appearing A division of the primary embryo-cell,with mutual repulsion of the two second-ary ones, is followed by cleavage of theentire yolk, through attraction round eachsecondary cell, fig. 563, of the parti-cles contiguous thereto. A repetition ofthis process issues in the four divisions ofthe germ-yolk, fig. 564 ; then in the eight,on until the whole is worked up into a 1 cclxi, ccxlix. for the same phenomena in Acephala (Unio and Anodon), p. 526;in Gastropods, p. 566. Ovum from the uceoviduct, Rabbit; ma CCLXI. fig. 565 ne half of theagn. 350 diam. as m and so DEVELOPMENT OF MONOTREMATA. 715 mass of finely nucleate corpuscles; amongst which the qualitiesof the parent embryo-cell, due to impregnation, are thus equallydistributed. The eight- fold cleavage of the yolk has been observed three daysafter impregnation in the Rab-bit, four days in the Guinea-pig, and ten days in the Bitch :always in ova toward the ute-rine end of the Fallopian
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