386 NERVOUS SYSTEM. 



gards them as in accordance with his idea, that injury of 

 the cerebellum does not affect coordination, but simply pro- 

 duces vertigo. It remains for the reader to judge whether 

 or not the phonomena observed indicate want of coordinating 

 power. 



We now come to the main question, whether or not, in 

 view of the results of experiments on animals and the phe- 

 nomena observed in cases of disease or injury of the cere- 

 bellum, this nerve-centre presides over coordination of ac- 

 tion of the muscles, which is certainly necessary to equili- 

 bration, except the muscles of the face and those concerned 

 in speech. This question seems to us to be capable of a 

 definite answer. 



Every carefully-observed case that we have been able to 

 find, in which there was uncomplicated disease or injury of 

 the cerebellum, provided the disease or injury involved more 

 than half of the organ, presented great disorder in the gen- 

 eral movements, particularly those of progression. AVe have 

 collected the more or less complete reports of sixteen cases. 

 In Case II., there was softening of one-half of one hemisphere, 

 and remarkable convulsive movements. In Case VI., the 

 one so often quoted from Combette, the gait was uncertain, 

 with frequent falling ; there was incomplete paralysis ; but, 

 in addition to the absence of the cerebellum, there was no 

 pons Yarolii. In Case VII., there was no disturbance of 

 movement, and there was partial degeneration of one lateral 

 lobe. In Case VIII., there was no disturbance of move- 

 ment, and disorganization of one lateral lobe of the cerebel- 

 lum. In Case XIII., there was slight loss of substance in 

 one lateral lobe of the cerebellum, and slight " vacillation " 

 in the movements. In Case XIV., there was an abscess in- 

 volving two-thirds of one lateral lobe, and the movements 

 of the limbs were preserved. In Cases I., III., IV., V., IX., 

 X., XI., XII., XV., XVI., ten out of sixteen, there was 

 difficulty in muscular coordination, which was invariably in 



