THE SPINAL CORD AND CEREBELLUM 147 



opposite hemisphere.* This connection is supposed 



to be of a double nature, permitting the carrying 



of impulses in both directions. The antero-lateral 



ascending column also contributes fibres to the 



superior peduncle, which pass into the cerebellum. 



The cerebellar ending of the fibres of the middle 



peduncles has been traced in the whole of the cortex 



of both lobes, and also in the median portion, or 



vermis. Thence they sweep down into the pons, 



crossing to the opposite side, and in this case also 



conduction is supposed to be in both directions. 



Bechterewt divides the fibres of the middle peduncle 



into two bundles, a cerebral one and a spinal one, the 



former of which takes its course to the upper portion 



of the pons, where it becomes connected with the 



fibres passing down from the cerebral hemisphere of 



the opposite side. The spinal bundle breaks up into 



two portions, one passing to the same, the other to 



the opposite side of the pons. Through the latter the 



cerebellum is connected with the reticular formation, 



and with the antero-lateral fundamental bundle of the 



cord. t 



The connections of the inferior peduncles of the Relations 



.of the cere- 

 cerebellum with the medulla oblongata and spmal beUum to 



the spinal 



cord are numerous and important. Foremost amongst cord, 

 them is that with the direct cerebellar tract through 

 the restiform body, which goes to form the great bulk 

 of the inferior peduncles. It is thus that, as before 



* Foster, loc. cit., p. 1210. 



t Bechterew, loc. cit., pp. 394-396. J Ibid., p. 395. 



10—2 



