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A 



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E 



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615 



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for that purpofe." * And adds, that what he had hefore preser- 



*^' concluded to be the ufe of refpiration In general, he had now, 



he thinks proved to be effeifted by means of the blood 



m con 



VATION 

 01^ MARI- 



r 



NERS. 



fequence of its coming fo nearly 



contad with the air in the 



** lungs : the blood appearing to be a fluid wonderfully formed to 



■ 



*' imbibe and part with that principle, which the chemifts call 

 ** phlogifton." It appears however from the experiment juft 

 mentioned, and which may ealily be repeated, that the blood inflead 



of difcharging any phlogifton, imbibes it only from the air, and 

 at each inhalation decompounds the common air, -f- which is a 



— L 



compound of empyreal air, % ( i. e. dephlogifticated air of Dr. 



Prieflley) 



y* 



"^ Experiments and Obfervations on different kinds of air, by Jofepli PneflleVj L. L. D. 

 vol. iii. p- ^6. In the Philof. Tranf, i^ol.Ixi. P. i. p. 226. 



'f Dr. Prieftley had no doubt left in his mindj t\i^t atmofpherical air confifts of the nitrous 



•acid and earth: Prieftley, vol. ii. p. 55 



Mr. Sage in his Elemens de 



Mlneralogic 



docimaftique, thinks common air to confift of phofphoric acid, Phlogifton and Water, vol. ii^ 



P- 3775 378. 



% The words empyreal air ^ ire ufed in an acceptation, which is not yet adopted as to the 

 compolition with air : but as this integrant part of air is very pure, gi^jes li/s and aliment t& 

 Jlame^ and admits more exhalations from the lungs, before it becomes unfit for refpiration 

 than common air, it may not improperly be called empyreal air: and being a compound of 

 a fubtle acid andphlogifton, it is analogous to a dulcified acid^ which may by a higher re6li- 

 iication become Ether. The word Ether has been adopted in chemiftry from the notions of 

 antient Philofophers, who called the fubftance they fuppofed to exid beyond our atmofphere 

 by that name : and in the fame manner the more reHned and purer regions beyond the 

 atmofphere were called by the antients the Empyreal Heavens. It will therefore be no 

 impropriety to call this integrant part of common air, Empyreal Air, 



