CHONDRODYSTROPHY 



489 



life; both other forms may attain a high age. The aplastic form is recogniz- 

 able by the absence of the vertebral and cranial synostoses described, and 

 further by a characteristic position of the joints by which the extremities 



Jt 

 Tu 



C/2 



maintain a curved appearance (Breus and Kolisko). The dwarfs are for 

 the most part especially small. 



For the characterization of the chondrodystrophic dwarf, it is also men- 

 tioned that they all show a great family likeness (Porak) ; that the gait in all 



