PLATE LIII. 

 SAGITTAL SECTION OF THE HEAD. 



The so-called fourth rneatus of the nose, i.e. the space between the upper turbinal 

 bone and the roof of the nose, was very shallow, and is chiefly hidden by the projecting 

 part of the anterior surface of the body of the sphenoid. 



The lateral recesses of the pharynx, I, are the remains of the dorsal end of the 

 second post-oral visceral pouches which never perforate in the normal human embryo. 



The dissection illustrated in this plate is one which Mr. Sutton made without freezing 

 for the Middlesex Hospital Museum ; several were cut before as good a one as this 

 resulted. (I intended to have made an original dissection, but there was no 

 possibility of obtaining fresh enough material ; nor even sufficiently fresh to make a 

 dissection for the topography of the brain ) 



