THE SPINAL CORD AND CEREBELLUM in 



tion 'when the inferior peduncle of the cerebellum has 

 been severed. To these he has applied the term 

 ' intermediate bundle.'* Of the fibres of the antero- 

 lateral fundamental tracts, which are sometimes 

 grouped together, some are connected with cells of 

 the anterior horn, some through the anterior com- 

 missure with the posterior horn of the other side — and 

 especially with the cells of Clarke's column — whilst 

 others pass to the gray substance between the lateral 

 and posterior horns of the gray matter.t 



The cells of the gray matter, which are held upon Functions 



of cells in 



evidence which is fairly conclusive to be motor to the the an- 

 terior horn 

 skeletal muscles, occupy a position rather to the of gray 



external side of the anterior horn, forming what is 

 termed the lateral or limb group. Another group 

 called the median is situated on the inner side of the 

 horn towards the anterior fissure, and is especially 

 conspicuous in the thoracic portion of the cord. It is 

 said by Bechterew to be composed chiefly of com- 

 missure cells connected with the opposite side of the 

 cord.t At the base of the horn und near to the 

 anterior commissure and central canal is a third 

 group of smaller cells, also belonging to the same 

 region, and very scantily represented in the cervical 

 and lumbar portions. It is held that the median 

 group is essentially distinct from the lateral group 

 and there seems to be some reason to suppose that 

 the latter is not represented, or is represented to a 



* Bechterew, loc. cit., p. 97. 



t Ibid., p. 78. t Ibid., p. 25. 



