Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 557
s and fertilizetheir ova, after thefashion of Vaucheria(§197). Thefertihzedova undergo segmen-tation according tothe ordinary type, thewhole yolk-mass sub-dividing successivelyinto 2, 4, 8, 16, 32 ormore parts, until a mulberry mass isformed; this then be-gins to elongate itself,the surface… … Development of Medusa-biids in/Sj/wcoryMaSarsii .-—A, an ordinary polype, with its club-shaped body covered with tentaeula:—b, apolype putting-forth medusan gemmae; a, avery young bud; h, a bud more advanced, thequadrangular form of which, with the fournuclei whence the cirrhi afterwards spring,is…
Microscopy
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