194 PHILOSOPHICAL TRANSACTIONS. [aNNO 166/, 



there is good store of such whales, it seems that would make the author re- 

 linquish the former opinion. 



An Account of an Experiment, made hy Mr. Hook, of preserv- 

 ing Animals alive hy blowing into their Lungs with Bellows. 

 N' 28, p, 539. 



I did heretofore give this illustrious Society an account of an experiment I 

 formerly tried of keeping a dog alive after his thorax was all displayed by the 

 cutting away of the ribs and diaphragm ; and after the pericardium of the heart 

 also was taken off. But divers persons seeming to doubt of the certainty of the 

 experiment (by reason that some trials of this matter made by some other hands 

 failed of success) I caused at the last meeting the same experiment to be shown 

 in the presence of this noble company, and that with the same success as it had 

 been made by me at first ; the dog being kept alive by the reciprocal blowing up 

 of his lungs with bellows, and then suffered to subside, for the space of an hour 

 or more, after his thorax had been so displayed, and his aspera arteria cut off 

 just below the epiglottis, and bound on upon the nose of the bellows. 



And because some eminent physicians had afHrmed, that the motion of the 

 ]ungs was necessary to life, upon the account of promoting the circulation of the 

 blood, and that it was conceived the animal would immediately be suffocated as 

 soon as the lungs should cease to be moved, I did (the better to fortify my own 

 hypothesis of this matter, and to be the better able to judge of several others) 

 make the following additional experiment, viz. 



The dog having been kept alive, (as I have now mentioned) for above An 

 hour, in which time the trial had been often repeated, in suffering the dog to 

 fall into convulsive motions by ceasing to blow the bellows, and permitting the 

 lungs to subside and lie still, and of suddenly reviving him again by renewing 

 the blast, and consequently the motion of the lungs : This, I say, having been 

 done, and the judicious spectators fully satisfied of the reality of the former 

 experiment, I caused another pair of bellows to be immediately joined to the 

 first, by a contrivance I had prepared, and pricking all the outer coat of the 

 lungs with the slender point of a very sharp penknife, this second pair of bel- 

 lows was moved very quick, whereby the first pair was always kept full and 

 always blowing into the lungs ; by which means the lungs also were always kept 

 very full, and without any motion ; there being a continual blast of air forced 

 into the lungs by the first pair of bellows, supplying it as fast as it could find its 

 way quite through the coat of the lungs by the small holes pricked in it, as was 

 said before. This being continued for a good while, the dog, as I expected. 



