1 



240 Analyfis of the Air. 



cubick inches of air, that will be 48000 cu- wOpC* 

 bick inches in an hour, at the rate of 20 in- 

 fpirations in a minute. 



at the rate of 20 in- ^Jcpf* 



A confidcrablepart u\ 

 /hich air is, we fee 



& 

 #* 

 :<•! 



of the elaflicity of w 

 by the foregoing Experiment, conftantly de- 

 ftroyed, and that chiefly among the vehi- 

 cles, where it is charged with much vapour. *? au 



But it is not eafie to determine how much 

 is dellroyed. I attempted to find it out byfjjv, 

 the following Experiment, which I mall here"" 

 give an account of, tho' it did not fucceed*' 

 fo well as I could have wifhed, for want of 1 ? 1 * 

 much larger vcflels ; for if it was repeated : 

 with more capacious veflcls, it would de-B^ 1 * 

 terminc the matter pretty accurately; becaufe " 

 by this artifice frefh air is drawn into the W bfi 

 Jungs at every infpiration, as well as in the* Ac | 

 free open air. ad net 



E X P E R I M E N r CX. * 1 4c 



I made ufe of the fyphon (Fig. 39. ) tak-- ... 



ing away the bladders, and diaphragms i 1 



n n : I fixed by means of a bladder one 



. end of a fhort leaden fyphon to the lateral 



foiTet i i : Then I fattened the large fyphon 



in a vcfTcl, and filled it with water, till it** la 



rofe 



t. 



