488 A CASE OF HEREDITARY BRACHYDACTYLY. 



family — Wm. T., a boy aged 13, whose extremities I have been 

 ullowed to examine. 



All the fingers, and the thumbs of both hands, were extremely 

 short, giving one the idea that there were only two phalanges to 

 each digit. In the photographs of the palmar and dorsal 

 aspects of the right hand this is well seen. 

 - Radiographs show that the shortening is due to the fact that 

 in the fingers the second phalanges, and in the thumbs the first, 

 are abnormally short ; in fact, are not more than one-third the 

 usual length. 



The usefulness of the hand does not appear to be diminished 

 perceptibly. 



This boy and his brother and sister are bright and lively 

 children, with no mental or bodily abnormality, save the short- 

 ness of the digits. 



