of age. His mother died of epilepsy when he was two years 
old. Father died of locomotor ataxia about six years ago. He, therefore, has inherited a marked neurotic tcndenijy. 
The lower jaw seems to be quite prognathous, while the face, 
from the upper border of the lower teeth to the superciliary 
ridge, is markedly concave. The superior maxillary bones, 
as well as the zygomse, are arrested in their development. 
The eyes have a sleepy look and are quite deeply set in the 
head; forehead narrow and quite prominent. This seems to 
be a case of atavism. There is a total collapse of the walls 
of the nose, difficulty in breathing, hypertrophy of the turbinated bones and mucous membrane, adenoid growth, and 
mouth-breathing. In this case, we cannot say that the lower 
jaw is excessively developed, because the teeth, which are 
not large, just fill the space, while the incisors do not pro- 
trude, and the third molars are in place. The upper jaw, 
however, is greatly arrested in its development. The third 
molars are not present. They could not erupt if they were 
there for want of space. (My experience has been that the 
third molar is nearly always missing in neurotics and degen- 
erates.) The left first bicuspid has been extracted, thus 
allowing spaces to occur between the incisors. In order that the teeth may all come into position, the anterior alveolar 
process has been pushed forward .60 of an inch. If the 
bones of the face had developed, the lower jaw would have 
appeared to a better advantage. This case shows an arrest 
of development of the superior maxillae, zygomae and nasal 
bones, with a normal lower jaw. A marked ridge extends 
the entire length of the vault at the suture. The distance 
outside of first molar is 2; outside second bicuspid, 1.75; width 
of vault between second bicuspid, 1; height of vault, .62, The chest walls are very contracted, the shoulders consid- 
erably stooped, and chest expansion very slight. Owing 
to the death of his parents it is impossible to state whether 
this is a direct inheritance or an arrest of development in the