14 THE TONER LECTURES. 



and one-third for the left. There are manj^ other points which 

 show the same thing. An ulceration in the lungs, an ulceration 

 in the liver, a hemorrhage, for instance, and sudden inflamma- 

 tion — all these disturbances can take place from an irritation of 

 the brain, as I have shown; but in these cases it is chiefly the 

 right side of the brain that has the power. 



I have already said that hj'sterical and emotional S3'raptoms 

 are more common in cases of disease of the right side of the 

 brain. This has been established already by a good many 

 ph^'sicians — Drs. Briquet and De Fleury, and a good many 

 others, besides myself. We have collected cases of paralysis in 

 one-half of the body, caused by hysteria, and this proportion 

 has been found ; out of 121 cases of paralysis caused by hysteria 

 (a paralysis which is usually merely transient, and very rarely 

 lasts long) — in 121 of these cases there was disease of the brain 

 on the right side 97 times, and disease on the left 24 times ; so 

 that the right side predominates in this class of affections. 

 That paralysis exists on the left side of the body more fre- 

 quently than on the right side you well know, and, as it aflTects 

 chiefly the right side of the brain, it affects chiefly the left side 

 of the body. 



Now as regards other points, my pupil. Dr. Jackson, has 

 ascertained that an inflammation of the retina produces amau- 

 rosis more frequently in both eyes from disease of the right 

 side of the brain than the left side. Convulsions of the eye 

 take place very frequently in cases of disease of the brain. I 

 have ascertained, from a stud}' of the cases published by Dr. 

 Prevost, Dr. Charmel, and many othei-s besides my own, that 

 out of 69 cases in which these convulsions of the eye occurred 

 there were 47 due to the disease in the right side of the brain, 

 and 22 due to disease in the left side of the brain. Therefore 

 there is a great difference between the two sides of the brain, 

 as you will see. It is also so as regards general convulsions. 

 Callender and myself have shown that general convulsions will 



