Principles of Zoology: Touching the Structure, Development, Distribution ... Pt. 1
Principles of Zoology: Touching the Structure, Development, Distribution ... Pt. 1
Louis Agassiz, Augustus Addison Gould
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only a transient state. Like the young Campanularia and the young Medusa, the spore of the sea*weed is free for only a short time; soon it becomes fixed, and from that moment the resemblance ceases. 360. Are we to conclude, then, from this resemblance of the different types of animals at the outset of life, that there is no real difference between them ; or that the two King doms, the Animal and the Vegetable, actually blend, be- cause their germs are .similar > On the contrary, we think nothin...g is better calculated to strengthen the idea of the original separation of the various groups, as distinct and independent types, than the study of their different phases. In fact, a difference so wide as that between the adult Medusa and the adult Campanularia must have existed even in the young; only it does not show itself in a manner appreciable by our senses ; the character by which they mibsequently differ so much being not yet developed. To Digitized by Google CONSEQUENCES OF ALTEBNATB 6ENEBATI0N.
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