. Elements of Comparative Anatomy. NERA^OUS SYSTEM OF ARTHROPODA. 257 § 199. In tlie lusecta^ we find a form which corresponds to the primi- tively homonomous segmentation of the body at the commencement of the process of development; and all succeeding arrangements of the nervous system are developed from it. The ventral chord traverses, as a rule, the whole length of the body, the ganglia being separated by equal distances from one another, so that the last ganglion lies in the last segment of the body. This character corresponds to the equivalence of the metameres, which obtains at these st
. Elements of Comparative Anatomy. NERA^OUS SYSTEM OF ARTHROPODA. 257 § 199. In tlie lusecta^ we find a form which corresponds to the primi- tively homonomous segmentation of the body at the commencement of the process of development; and all succeeding arrangements of the nervous system are developed from it. The ventral chord traverses, as a rule, the whole length of the body, the ganglia being separated by equal distances from one another, so that the last ganglion lies in the last segment of the body. This character corresponds to the equivalence of the metameres, which obtains at these stages, and points to its transmission from a lower stage, such as that which we find permanently in the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gegenbaur, C. (Carl). London : Macmillan
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Keywords: ., bo, bookcentury1800, bookdecade1870, bookpublisherlondonmacmillan
