472 PHILOSOPHICAL TRANSACTIONS. [aNNO 1676. 



That the membranes and nerves suck in their nourishment from the glands of 

 the mouth and throat, while we chew our meat. That after it is concocted in 

 the stomach, part of it is filtrated and transferred by the oesophagus or gullet 

 to the brain. From whence it is also derived to the nerves and membranes, 

 especially the membrana carnosa originated of the pia mater. That the colli- 

 quamentum, which first appears in a setting egg, is the ground work or begin- 

 ning of the brain. That the blood serves not to nourish the body, but only to 

 foment it, as it were, or keep it warm. That generation is opus ideale, and 

 the semen not to be taken for an extract from the several parts. For viviparous 

 animals have a placenta, to which there is nothing analogous in either parent. 

 That the pulse is rather the vibration, by a continuation of the motion from the 

 heart, than the intumescence of the artery. That urine is not derived to the 

 reins by the emulgent arteries, but by the nerves. That what are called the 

 lungs of a frog are only wind-bladders, analogous not to lungs, which in a frog 

 are no where found, but to that part, which in fishes is commonly called the 

 swim. That the primary use of respiration, is not to carry off fuliginous steams 

 from the blood, but for the ventilation of the vital flame in the heart or blood, 

 and supplying it with proper fuel. That it is a vulgar error, that the action of 

 exspiration is performed more slowly than of inspiration. That in the tip of an 

 Indian naked dog's ear, there are no muscles found, although he command it 

 into various and nimble motions. That the only use of the diaphragm, is to 

 facilitate respiration by guarding the heart and lungs, that the lower viscera do 

 not throng in upon them. That respiration is not needful to the motion or cir- 

 culation of the blood. That although heretofore our author thought the air in 

 inspiration to be mixed with the blood ; yet he says, that after several experi- 

 ments made, he could not by any good argument evince the same. 



He has made the experiment, that whey tinged with saffron, being injected 

 into the pulmonary artery, immediately runs into the left ventricle of the heart, 

 without the assistance of inspiration. Neither does any blood at the same time 

 break forth into the lungs. He supposes, that animal motions are not made 

 by the influence of the animal spirits. But that in each part is seated a private 

 sense, which is under the command of the soul. And that therefore there are 

 no animal spirits, but those in the blood, called by the name of the calor na- 

 tivus. That the suspension or intermission of inspiration for a certain time 

 does not alter the pulse.* 



* It is scarcely necessary to remark that this treatise of Dr. Ent's abounds in false physiology. 

 END OP VOLUME TWELFTH OF THE ORIGINAL. 



