. The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) : being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts des insects;" and a compilation from the works of Newport, Charles Darwin, Spence Bate, Fritz Müller, Packard, Lubbock, Stainton, and others. ganglionic chain. No sooner has the caterpillarchrysalis, than the ganglionic chainthe cords which united the nervoustheir course ; then they shorten;drawn together. Day by day theare gathered towards the thoraciccloser together. The middle part become tr
. The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) : being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts des insects;" and a compilation from the works of Newport, Charles Darwin, Spence Bate, Fritz Müller, Packard, Lubbock, Stainton, and others. ganglionic chain. No sooner has the caterpillarchrysalis, than the ganglionic chainthe cords which united the nervoustheir course ; then they shorten;drawn together. Day by day theare gathered towards the thoraciccloser together. The middle part become transformed into thesuffers considerable changes ;centres have become wavy inand thus the ganglions arefirst ganglia of the abdomencentres, which have becomeof the chain is altered the THE METAMORPHOSES OF THE NERVOUS SYSTEM. 41 least and the most tardily. The butterfly, once escaped fromits chrysalis case, is found to have undergone extraordinaryalterations in the nervous system. The abdominal chain ofganglions appears to be formed of four masses only ; the nervouscentres of the first two segments of the abdomen of the caterpillarstate have disappeared by uniting with the enlargement in themetathorax; and those of the last four rings have becomeconcentrated into one mass. Newport has given us the results of his study of the progressive.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjec, booksubjectcrustacea
