40 THE BRADSHAW LECTURE 



the right side. This was the fifth child of a 

 mother aged twenty-five years. The mother's lip 

 was perfect but she had an absence of the lateral 

 incisor tooth of the right side which had never 

 been extracted and was known never to have 

 developed. The third case was the first child of 

 a delicate woman, aged twenty-three years. The 

 mother had absence of the left lateral incisor, which 

 she was certain had never been extracted; her 

 infant had left-sided hare-lip and completely 

 cleft palate.* 



Further observations led to the discovery that 



FIG. 5. 



Mouth of mother showing small right upper lateral incisor 

 tooth and scar of hare-lip. Her child had right side hare-lip 

 and completely cleft palate. 



an ill-developed lateral incisor tooth might fore- 

 tell hare-lip and cleft palate in the offspring. A 



* ' Clin. Soc. Trans.,' 1888, p. 64. 



