TOL. v.] PHILOSOPHICAL TRANSACTIONS. 485 



he grew able to He constantly upon his belly (which yet retiined much of its 

 former lankness;) and though it be now above twenty-four hours since he was 

 first included, he continues yet alive. 



(Postscript. He lived in the basin eight or ten days longer; though divers 

 gudgeons, since taken, died there in much fewer days.) 



The Eighth Title. 



Of two Animals with large IVounds in the AbdomeUy included in the Pneumatical 



Receiver. 



Exp. I. — Sept. 12. A small bird having the abdomen opened almost from 

 flank to flank, without injuring the guts, was put into a small receiver, and, the 

 pump being set to work, continued for some little time without giving any signs 

 of distress, but at the end of about a minute and a half from the beginning of 

 the exhaustion, she began to have convulsive motions in the wings; and though 

 the convulsions were not universal, or apparently violent, as is usual in other 

 birds from whom the air is withdrawn by the engine, yet at the end of two full 

 minutes, letting in the air, and then taking off the receiver, we found the bird 

 irrecoverable ; notwithstanding which we did not find any remarkable alteration 

 in the lungs, and found the heart (or at least the auricles of it) to be yet beating, 

 and so it continued for a while after. 



Exp. 11. — ^We took also a pretty large frog; and having, without violating 

 the lungs or the guts, made two such incisions in the abdomen, that the two 

 curled bladders or lobes of the lungs came out almost totally at them, we sus- 

 pended the frog by the legs in a small receiver, and after we had pumped out a 

 good part of the air, the animal struggled very much, and seemed to be much 

 disordered ; and when the receiver was well exhausted, she lay still for a while, 

 as if she had been dead, the abdomen and thigh very much swelled, as if some 

 rarefied air or vapour forcibly distended them. But as, when the frog was put in, 

 one of the lobes was almost full, and the other almost shrimk up, so they con- 

 tinued to appear, after the receiver had been exhausted ; but upon letting in the 

 air, not only the body ceased to be tumid, but the plump bladder appeared for 

 a while shrunk up as the other, and the receiver being removed, the frog pre- 

 sently revived, and quickly began to fill the lobe again with air. 



The Ninth Title. 

 Of the Motion of the separated Heart of a Cold Animal in the Exhausted Receiver, 



Without discussing the opinions of learned men about the connection and 

 dependency of the motion of the blood and beating of the heart, I thought it 



