THE EFFECT OF ORTHODACTYLY 



At the left is a hand with the third, fourth and fifth fingers affected. The middle joints of 

 these fingers are stiff and cannot be bent. At the right the same hand is shown, closed. 

 A normal hand in the middle serves to illustrate by contrast the nature of the abnormality, 

 which appears in every generation of the family. (Fig. 8.) 



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A FAMILY WITH ORTHODACTYLY 



Squares denote males, circles females. Black squares or circles denote affected individuals. 

 Al had all fingers affected; B2 had all but one finger affected; C2 had all but one finger 

 affected; D2 had all fingers affected; D3 has all but forefingers affected. (Fig. 9.) 



