

\ 





^ 



.;i! 



% 



*** 



■ ■■ 



»■ 







: 



Aialy/h of the Air. 237 



I then filled a large earthen vcflfel brim 

 full of water, and put the lungs in, which 

 I blew up keeping them under water with 

 a pewter plate. Then taking the lungs out 

 and letting the plate drop to the bottom of 

 the water, I poured in a known quantity of 

 water, till thcvelTel was brimful again 5 that 

 water was 7 pounds 6 ounces and ~ equal 

 to 204 cubick inches 5 from which deduct- 

 ing the fpacc occupied by the folid fub- 

 ftance of the lungs, viz. 37 ~\- t cubick 

 inches, there remains 166 -\- 7 cubick inches 

 for the cavity of the lungs. But as the Pul- 

 monary Veins, Arteries and Lymphaticks 

 will, when they arc in a natural ftate re- 

 pleat with blood and lymph, occupy more 

 fpace than they do in their prefent empty 

 ftate ; therefore fome allowance muft al- 

 fo be made, out of the above taken cavity 

 of the lungs, for the bulk of thofe fluids j 

 for which 25 -\- ~ cubick inches feems to 

 be a mfficient proportion, out of the 166 

 + f cubick inches 5 fo there remains 141 

 cubick inches for the cavity of the lungs. 



I poured as much water into the Bron- 

 chia as they would take in, which was t 

 pound 8 ounces, equal 1041 cubick inches ; 



this 



I 









1 



I 



