MULTIPLE NEUROMATA OF THE CENTRAL NERVOUS SYSTEM. 767 
DISTRIBUTION OF THE PatcHES AND NODULES. 
It will be convenient at this point to indicate the general distribution of the 
patches and nodules at different levels. Only these have been represented in the 
figures that were readily recognisable under a low magnification in Weigert-fuchsin 
or iron-hzematoxylin sections. 
Lower Part or Meputua OBLoncaTra—“ A.” 
Four well-marked patches are to be found on examining sections at this level. 
The smallest of these is situated in the mesial line in the centre of the space bounded 
posteriorly by the two nuclei of the hypoglossal nerves and anteriorly by the two 
posterior longitudinal fasciculi, between which it extends for a short space. A second 
patch is situated at the lateral surface of the medulla, just anterior to the descending 
root of the 5th nerve, and appears to involve some of the fibres of the direct cerebellar 
Fie. A. 
tract which pass backwards into the restiform body at this level. This patch is 
triangular in outline, the apex being directed inwards. The remaining two patches 
lie between the pyramids and the lower end of the inferior olivary nucleus, one lying 
close to the surface of the medulla, the other about the middle of the posterior 
surface of the pyramid. These two patches thus involve the fibres of the hypoglossal 
nerve as they pass between the inferior olive and the pyramids on their way to the 
surface of the medulla. 
MIppLE oF THE MEDULLA OpLoncaTa—“ B.” 
The number of patches has greatly increased at this level. Two well-marked 
examples are to be found in each restiform body, all being quite superficial in position. 
The remaining patches may be considered in relation to the inferior olivary nucleus. 
A narrow elongated mass is to be seen between each olive and the corresponding 
pyramid, the strands of the hypoglossal nerve on each side being thus involved, and 
appearing to pass through these patches. Other two are situated at the postero- 
