the XII nucleus in the direction of the raphe. Near the calamus 
40 bundles can be counted on the left side; at the right, where a 
few more are added, only 3 or + are to be found. The dorsal 
branch of the bundles has disappeared; caudally from the calamus 
the complex runs ventrally from the dorsal motor vagus nucleus 
and medially from the central canal (fig. 3). The complex gradually 
decreases, its outline finally fades away and 170 sections spinally from 
the calamus the last bundle disappears in the raphe. Regarding the 
exact connections of the latter I do not venture to make any 
Statement. 
Auchenia lama. Series of 365 sections; the calamus falls in section 
3/ 
/ 5 
of the 
dorsal motor vagus nucleus lie in the closed part of the oblongata 
(fig. 1). The nucleus begins caudally as a small, round group of 
cells, dorso-lateral from the canalis centralis; it increases slowly in 
219, so that here too, as in the goat and the camel, 
size chiefly at its lateral side, so that it becomes egg-shaped, not 
before the middle of the spinal portion does it become more oblong in 
shape and the first commissure cells appear, frequently lying more 
dorsally than in the camel, so that the whole cell-column, dorsally 
from the central canal takes a more or less curved course. (fig. 10). 
Fig. 10. Dorsal motor vagus nuclei and motor commissural 
X nucleus in the lama. 
The motor commissural vagus nucleus of the lama (Fig. 10) is in 
general not so well developed as that of the camel. Although it 
stretches further frontally than in the camel (ending 20 sections 
spinally from the calamus) it is smaller in comparison (tig. 1). Its size 
is not constant, in some places it is more or less poorly developed. 
In the lama too, the dorsal motor vagus nucleus lies obliquely 
near the calamus, and it has a much thicker ventro-lateral pole, 
containing many cells of the large type; in front of the calamus 
the dorsomedial part also bulges distinctly, and the nucleus thereby 
beeomes triangular in shape, with the base directed towards the 
