TRANSMISSION OF MALFORMA TIONS. 1 9 1 



this litter have since had young with cleft noses, and 

 the malformation seems to be well established. The 

 deformity consists of a median vertical split in the 

 upper lip, extending some distance between the nostrils 

 and involving the hard palate (fig. 102). The ex- 

 tent to which the bony portion of the palate is in- 



FIG. 103. The hard palate from a Dog with hare-lip, showing 

 the extent to which the hard palate is involved. 



volved may be seen in fig. 103. Apart from its special 

 interest the malformation is of value as showing that 

 defects, arising from arrested growth during embryonic 

 life, are transmitted, and this is clearly the case not only 

 in connection with the lips, but with the pinna, eye, eye- 

 lids, and many other parts of the body. 



It now becomes necessary to detail briefly the leading 



