. Rare and remarkable animals of Scotland, represented from living subjects: with practical observations on their nature. nal ova are generated, and attain maturity in thebasis, from whence, in the later season, they are liberated by its decay ordecomposition, to float at the surface of the water. VI. The contents of the ovum, originally fluid, require 200, 230 days,or longer, for consolidation and maturity of the embryo. VII. The foetus developes as a single hydra, with an ample basis, onquitting the ovum. It is subsequently joined by the successive evolutionof others, whose ultimate numbers
. Rare and remarkable animals of Scotland, represented from living subjects: with practical observations on their nature. nal ova are generated, and attain maturity in thebasis, from whence, in the later season, they are liberated by its decay ordecomposition, to float at the surface of the water. VI. The contents of the ovum, originally fluid, require 200, 230 days,or longer, for consolidation and maturity of the embryo. VII. The foetus developes as a single hydra, with an ample basis, onquitting the ovum. It is subsequently joined by the successive evolutionof others, whose ultimate numbers are proportioned to the survivance ofthe specimen. It appears from the history of this animal, that it is suitably charac-terised by the name Cristatella vagans, said to have been given by genus, believed to comprise only a single species, was instituted byCuvier. Plate XXVII. Fig. 1. Cristatella vagans (Mucedo miralilis), from the garden pond at Binns Another specimen, entire. When bisected, the two halvesfirst receded from each other, and afterwards ap-proached reciprocally. /•// PLAT£X2T/U.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectzoology, bookyear1848
