55 

 somewhat less in quantity than in the cerebellar neurone, and 

 holding less tigroid substance. 



Proni the above description of the morpholok^y of the neu- 

 rone of Purkinje from the tuberculum acusticuni, it will be 

 evident that it is strikingly like its earlier-known represen- 

 tative in the cerebellum. Compare, also, Pi^.7 with Fit^.l^. 

 The neurone from the tuberculum acusticum (Bif:.7) is merely 

 slightly smaller in size, with a dendritic top which branches 

 somewhat less. The presence of conspicuous gemmules is char- 

 acteristic of both, 'f.e shall take occasion to point cut fur- 

 ther on that the cerebellar neurone is to be regarded as the 

 more fully developed derivative of this element from the ob- 

 longata. 



0. Terrdnation of Acustico-Lateral Fibres. — The fibres 

 of the acustico-lateral system enter the tuberculum acusticum 

 through the medium of the thin neck joining the acusticum with 

 the general cutaneous nucleus below. This fact is expressed 

 in Pig.?, a.l.f. It appears, so far as they are traceable, 

 that these fibres have passed over from the opposite side in 

 the arcuate bundles. Penetrating the core of the acusticum, 

 the fibres are at first associated in groups, but these soon 

 become dissolved and the individual members spread through the 

 outer levels. The fine terminal branches pass through the 

 thorny dendritic tops of the neurones of Purkinje, and the 

 final arborisations are to be frequently observed near the 



