136 



HEREDITY AND EUGENICS 



Kindred (1922) gives the pedigree of another family, 

 in which a pecuhar httle pit occurs in the skin at the 

 proximal end of the upper part of the helix of the 

 left ear. This is known to have occurred in four 

 generations, as is shown by the chart (Fig. 28). 



The propositus (III. 7) has the pit, as well as her 

 father and father's father. Some of her father's 

 brothers and sisters probably had the mark, because 

 some of her cousins were known to have it. Three of 

 her sisters who married all had one or more children 

 showing the mark, although tw^o of them did not have 

 the pit themselves. One of the most remarkable 

 features of these slight peculiarities is their unilateral 



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Fig. 28. — Pedigree Chart showing Inheritance of a Small 



Pit in the Left Ear. 



occurrence, being confined to the right side in one 

 family, and the left in another. We are at present at 

 a loss to picture the hereditary mechanism by which 

 this comes about. 



Of a similar nature is the case (Sedgwick, 1863) of 

 a Spanish nobleman who had one cheek bigger than 

 the other. His father and some of his uncles had 

 the same peculiarity. Another record of the same 

 writer (p. 464) is that of a patient in St. George's 

 Hospital in 1833. Neither he nor his father nor 

 grandfather had a patella (knee-cap). 



Drinkwater (191 4) described an interesting case of 

 bimanual synergia, in which the individual is obliged 



