176 



ZOOLOGY, 



the frontal sinuses, so large in many animals, as in the owl 

 ;uid elephant, and even in man himself, may lead to irravr 

 errors in ivspn-t of that which is really aimed at, namely, to 

 discover I),,, ratio of the area of the cerebral cavity to that of 

 the/are; and by inference, the relative si/e of the brain, or of 

 all the central organs situated within the head, to the capacity 

 of the cavities lor containing the organs of sense. R. K. 



343. Daily observation' shows how variously the intel- 

 lectual faculties of individuals are modified: to some are 

 given a brilliant imagination; to others, great pov\ 



Fig. 119 bis. Respective Dimensions of the Cranium and Face.* 



calculation : with some, generalization is easy ; with others, 

 difficult or impossible. The senses also are quite distinct in 

 these respects; and hence, in all ages, attempts have been 



* Vertical section of the cranium and upper jaw, left side, seen from 

 within. Besides showing the anatomical details of tin 1 -. vl com- 



plex osseous surfaces, the section is a valuable one, physiologically : it enables 

 the student to compare the area of the crn-bral and cerebeDar caritiea with 

 the area of the face, or at least of the upper jaw ; the relation therefore which 

 the eiicephalon lias to the organs of sense. It displays also the position of 

 the brain to the face, pharynx, and vertebral column, although these last are 

 not present in the figure. d, the osseous palate ; e, inferior meatus of the 

 nostrils ; m, mid<lle meat us , /, a portion of the perpendicular lamina of the 

 ethmoid; . |>"iut- to the frontal -imi-es ; ,-. cnsta yalli : k. L.T. >\ es f,, r tlie 

 branches of the middle meniii^ejil artery; //, posterior cliuoid JT 



A, foramen ovale ; f, groove for the left lateral sinus ; ., is placed near the 

 section of the foramen mngnum : ./'. stvloid p 

 From the Manual qf Anatomy, by K. Kno\. 



