THE INHERITANCE OF FAMILY TRAITS 103 



j. Hysteria. — This term is applied to a variety of symp- 

 toms that indicate a functional disturbance of the psychic 

 centres usually combined with a derangement of the lower 



I b^ lj] t!)^fe 



numerous 

 decendants 

 all normul 



jb: 



Fig. 67. — Pedigree of a family showing Huntington's chorea. Affected 

 persons (indicated by black symbols) are always derived from affected parents. 

 From original data furnished by Dr. S. E. Jelliffe; Smi-family. 



cerebral or spinal centres. The psychical symptoms ap- 

 proach mania on the one hand and show a more or less 

 complete loss of the moral sense on the other, so that many 



M 



13114115 



^i^'4^ ^1^ ^'w 



Fig. 68. — Pedigree of a family with Himtington's chorea. All affected 

 persons (black symbols) have at least one affected parent. ELamilton, 1908, 

 p. 453. 



cases of larceny, assault, and sexual immoraUty are conse- 

 quent upon this disease. The emotions usually are dis- 

 turbed. The motor symptoms are frequently profound. 



