epileptic (cong.), then two healthy children followed by a daughter who 

 becomes insane at 23, then a son insane at 22, and lastly two children 

 who are up to the present free from any taint. The sister of A. B. is 

 married and has a family of ten, seven girls and three boys; one of the 

 females was admitted to the asylum at the age of 19, and since this pedigree 

 was constructed a brother of hers has been admitted, aged 24. Half -black 

 circles are insane. 



The pedigree is instructive ; it shows direct and collateral heredity ; it 

 also shows remarkably well the signal tendency to the occurrence of insanity 

 at an early age in the children of an insane and potentially insane parent. 



Fig. 4. A very comprehensive and interesting pedigree obtained for me 



