FUNCTIONS OF THE CEREBELLUM. 389 



removed with apparent destruction of sexual instinct. In a 

 comparison of the relative weights of the cerebellum in stal- 

 lions, mares, and geldings, Leuret found that, far from being 

 atrophied, the cerebellum of geldings was even larger than 

 in either stallions or mares. 1 



In the numerous cases of disease or injury of the cere- 

 bellum, to which we have already referred, there are some, 

 in which irritation of this part has been followed by persistent 

 erection and manifest exaggeration of the sexual appetite, 

 and others, in which its extensive degeneration or destruction 

 has apparently produced atrophy of the generative organs 

 and total loss of sexual desire. There are also certain cases 

 of this kind which we have not yet cited. Serres gives the 

 history of several cases, in which irritation of the cerebellum 

 was followed by satyriasis or nymphomania, but in other 

 cases, there were no symptoms referable to the generative 

 organs. 3 In the case reported by Combette, the patient had 

 the habit of masturbation. 3 Dr. Fisher, of Boston, gives an 

 account of two cases of diseased or atrophied cerebellum, with 

 absence of sexual desire, and one case of irritation, with 

 satyriasis. 4 Similar instances are given by other writers, 

 which it is unnecessary to detail. We have already cited 

 the observations of Budge and of Hammond, in which me- 

 chanical irritation of the cerebellum was followed by move- 

 ments of the uterus, testicles, etc. 6 For other citations bear- 

 ing upon the connection between the cerebellum and the 

 generative function, the reader is referred to the elaborate 

 memoir by Prof. Hammond. 6 



1 LEURET, Ana'omie comparee da sysleme nerveux, Paris, 1839-1857, tome i., 

 p. 429. 



2 SERRES, Sur les maladies organiques du cervelet. Journal de physiologic, 

 Paris, 1822, tome ii., p. 172, et seq., and p. 249, et seq. 



3 Journal de physiologic, Paris, 1831, tome xi., p. 30. 



4 FISHER, Contributions Illustrative of the Functions of the Cerebellum. Amer- 

 ican. Journal of tjie Medical Sciences, Philadelphia, 1838, No. xlv., p. 352, et seq. 



5 See page 363. 



6 Quarterly Journal of Psychological Medicine, New York, 1869, vol. Hi., p. 

 219, et seq. 



