MARRIAGE AND DISEASE. 



Normal. 



Cataract. 



SQUINT. This is another imperfection of the ocular 

 apparatus which is very frequently hereditary. Like 

 cataract, it is very common among idiots, imbeciles, 

 and epileptics. Its presence points to nervous dis- 

 order, central or otherwise, and must be looked upon 

 in all cases where it is not the result of local injury, 

 not simply as a disfigurement, but as a sign of the 

 presence of the neurotic diathesis. 



The eye is more intimately connected with the 

 brain than almost any other organ in the economy 

 except the ear, and where disease or other imperfect 

 conditions of the nervous centres are met with, the 

 eye generally shows imperfect development, deformity, 

 or degenerative change. Indeed, it is the exception 

 rather than the rule to find perfect eyes among idiots, 

 imbeciles, and others in whom the brain is ill-developed 

 or diseased. 



DIABETES. This is another disease which is very 

 commonly hereditary. Like asthma and the eye 

 affections just noticed, it is closely allied to the 

 nervous diathesis. It is the rule to find epileptic or 



