2^ 



FORCE OF YAPOUH. 



however it does not fuperfede the expediency of determi- 

 nation by experiment ; though that is much more difficult 

 above 212°, and below 32°, than in the intermediate de- 

 grees ; becaufe it is difficult to procure a fleady heat above 

 212°; and below 32° the variation of force becomes fo fmall 

 as to elude minute difcrimination. It will appear from what 

 follows that the extenflon of the table by this method above 

 212° is in all probability accurate, or very nearly fo, for 

 100° or more. 



TABLE 

 Table of the Of the Force of Vapour from Water in every temperature 

 force of aqueous f^^^ ^j^^^ ^p ^^^ congelation of Mercurv, or 40° below zero 

 Tacour orfteam. „ " ^ 



of Fahrenheit, to 325°. k 



Temper- 



Force of Vap. 

 in inches of 

 Mercury. 



Temper- 



Force of Vap. 

 in inches of 

 Mercury, 



Temper- 



Force of Viip. 

 in inches of 

 Mercury. 



.40°— 

 -30 



,013 



,020 



O^O 



I '^6 



54° 



55 



,429 



,443 



26 



,162 



-20 



,030 



27 



,168 



56 



,458 



rlO 



,043 



28 



,174 



57 



,474 



;_ 





29 



,180 



53 



,490 







,064 



30 



,186 



59 



,507 



1 



,066 



31 



,193 



60 



,524 



2 



,068 



~ 





61 



,542 



3 



,071 



32 



,200 



62 



,560 



4 



,074 



33 



,207 



63 



,578 



5 



,076 



34 



,214 



64> 



,597 



6 



,079 



35 



,221 



65 



• ,616 



7 



,082 



36 



,229 



66 



,635 



8 



,085 



37 



,237 



67 



,655 



9 



,087 



38 



,245 



68 



,676 



10 



,090 



39 



,254 



69 



,698 



n 



,093 



40 



,263 



70 



,721 



12 



,096 



41 



,273 



71 



,745 



13 



,100 



42 



,283 



72 



,770 



J4. 



,104 



43 



,294 



73 



,796 



15 



,108 



44 



,305 



74 



,823 



16 



,112 



45 



,316 



75 



,851 



17 



,116 



46 



,328 



76 



,880 



18 



,120 



47 



,339 



77 



,910 



19 



,124 



^8 



,351 



78 



,940 



20 



,129 



i-9 



,363 



79 



,971 



21 



. ,134 



50 



,37.; 



80 



1. 00 



22 



,139 



51 



,38-s 



81 



1. 04 



23 



,144 



52 



,40] 



82 



1. 07 



Si 



,150 



53 



,415 



83 



1. 10 



Tenl- 



