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alf the sensorics ; but in brutes, whose face is prone 

 to the earth, and who are not capable of speculation, 

 the cerebellum, which ministers merely <o animal life, 

 is placed above the brain, also some of the organs of 

 sense are placed, if not above the brain, at least on a 

 level therewith. 



Another very great convenience in this position of 

 the brain and cerebellum is, in the head of man, the 

 base of the brain and cerebellum, yea of the whole 

 skull, is set parallel to the horizon, by which means 

 there is the less danger of the two brains joggling or 

 slipping out of the place; but in beasts, whose heads 

 hang down, the base of the skull makes a right angle 

 with the horizon, by which means the brain is beneath 

 and the cerebellum above. And lest the cerebellum 

 should hereby be liable to frequent concussions, an ad- 

 mirable provision is made by that strong membrane the 

 durarnater, closely encompassing it, B-side this, it is 

 guarded in some species with a strong bony fence. In 

 the hare, the coney and several others, a part qf the 

 cerebellum is on each side within the os pctrosiun, so 

 that its whole mass is, by this double stay, firmly con- 

 taincd within the skull, 



4. The heart and lungs in beasts are of the same 

 structure, with the same apparatus of veins and arte- 

 ries as in men. We cannot therefore doubt but the 

 blood circulates in them, and nutrition is performed as 

 in us. Their food also being dissolved in thestoma h, 

 is conveyed by the lacteals to the receptacle of the 

 chyle. To the fore-part of this (in men the upper 

 part) joins the thoracic duct, which extending through 

 the length of the thorax ends in the vein called in 

 beasts cruralis anterior. The remaining, part of the 

 circulation is performed in them as in men. 



But some beasts have more stomachs than one; and 

 some have the peculiar property of chewing the cud. 

 The food, after it has been swallowed, is returned to 

 the mouth, where it is chewed over again at leisure. 



Not that this is altogether peculiar to beasts. There 

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