The human brain, its configuration, structure, development, and physiology : illustrated by references to the nervous system in the lower orders of animals / by Samuel Solly ... With twelve plates.

  • Samuel Solly
Date:
1836
Catalogue details

Licence: Public Domain Mark

Credit: The human brain, its configuration, structure, development, and physiology : illustrated by references to the nervous system in the lower orders of animals / by Samuel Solly ... With twelve plates. Source: Wellcome Collection.

Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.

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    the anterior part of the dorsal vessel which passes immediately beneath them, and to the oesophagus along which this is directed. The longitudinal cords originate from the under surface of these lobules, and passing a little backwards meet be- neath the oesophagus, and by their uniting form the heart-shaped or first ganglion [Plate I. fig. 1. (1)]. From this they are continued close to each other into the next segment or true collar of the future moth, and here connected from the second ganglion [fig. 1. (2)'], which is nearly of a spheri- cal form. The cords then gradually diverge and proceed apart from each other, passing on the outside of and inclosing between them the inser- tions of some of the diagonal muscles of the fu- ture thorax, until they again unite in a third and distinctly bilobate heart-shaped ganglion [fig. 1. (iJ)]. From this they are continued in the same manner into the fourth segment, and uniting, form a similarly shaped fourth ganglion [fig. 1. (4)]. They then pass close to each other into the ante- rior part of the fifth segment, and form a gan- glion [fig. 1. (5)], the distance of which from the fourth, like that of the second from the first, is scarcely more than half of what exists between any of the other ganglia. From the fifth they are continued to the sixth, seventh, and so on to the eleventh segments, forming in the middle of each one nearly spherical ganglion [fig. 1. (5, 6, 7, 8, 9, 10, 11)], which has scarcely any appear-