224 Professor Clark on a Case 



The oethmoid bone is entirely wanting on the side corresponding' 

 to the less perfect face, and the frontal bones are there united by 

 ossific matter to form the roof of the orbit and the forehead of this 

 face : the two orbits being necessarily imperfect from the absence of 

 the fethmoid, and therefore forming one cavity. On the side cor- 

 responding to the more perfect face there is a rudiment of the 

 aethmoid, which is, in fact the proboscis of this side. It appears to 

 have been forced downwards and forwards by the lateral pressure 

 of the frontal bones, and is connected to their inner edges by 

 ligament. 



Thus the smallness of the squamous bone, and of the ingi'assial 

 process, with the absence of the aethmo'id, renders the position of the 

 frontal bone and of the face necessarily lateral in respect of the spine. 



In the less perfect face, from the total absence of aethmoi'd 

 and nasal bones, and the narrowness of the frontal bone, the 

 superior maxillary bones are so much compressed laterally that 

 their palatine plates form a ridge, rather than a horizontal lamina. 

 Hence the cavity of the mouth is deep, but very narrow ; so 

 narrow that the tongue though small cannot project into it, but 

 lies in that common cavity which is between the two mouths, and 

 directly below the oval opening of the sphenoids. The other 

 mouth, from the width of the frontal bones, &c. is large enough 

 to receive a well-formed tongue. The membrane which lines the 

 sides and vault of either mouth, and admits the parotid ducts, 

 presents a small papilla in the situation of the uvula, oh whose 

 sides are seen the openings of the eustachian tubes. Behind the 

 tongues, which are properly attached to hyoi'd bones, and these 

 to the temporal bones, is the common sac which is the bag of 

 the pharynx. Into this the two larynges open, covered by their 

 epiglottides ; and it terminates in a single aesophagus. 



