Formula for calculating the Force of Steam. 267 
Example. 212°485=297, Log.=2:47276 
: ip » Os 
—2:22679 a constant num- 
0:24597 [ber. 
30-00 inches. 
Comparative Table. 
= Dr. Ure’s Dalton’s} By 
4 Exp. | Caleult. | Exp. | Formala. 
> | inches. | _ 
310 {161-30 |157-25 , |165°61 
300 |189°70 |137-94 142:01 
290 .1120°15 |119°95 b21°27, 
280 {101-90 103°41 103°18 
270 | 86°30 | 88-39 87°31 
260 | 72°30 | 74:91 73°57 
250 | 61:90 | 62:95 61-68 
240 | 51°70 | 52°46 51°44 
230 | 43°10 | 43°36 42°66 
220 | 35°54 | 35:54 35'°)7 
212 | 30:00 | 30:00 | 39-00 | 30-00 
210 | 28°88 | 28-90 | 28-S4 | 23-81 
200 | 23-60 | 23°50 | 23°64 | 23-44 
190 | 19:60 | 19:00 | 19-00 | 18-94 
180 | 15:16 | 15-20 |.15°15 | 15°18 
170 }.12-05 | 12:07 | 12:13 | 12-07 
160} 9:60 | 9°50 | 9:46) 9-52 
TSO) ng On| AAA ceed ) soe 
140 | 5:77). 5°75.) 574 | 5:74 
130 | 4:37 | 4:42 | 4:34] 4:39 
120 | 3:30 | 3-37 | 3:33] 3:32 
110 | 2-46 | 255 | 2:53} 249 | 
100 | 1-86 | 1-92 | 1:86} 1:84 - | 
90 | 1°36 | 1:43 | 1-36.) 1-34 
80 | 1:01 1:06 | 1-00 “97 
70 73 77 72 “O69 
60 52 0) 52 “50 
50 36 “40 *37 35 
40 120 28 26 *26 
32 *20) 20 -20 “20 
30 "19 ‘19 “19 8 
20 14 14 "13 1d 
Again; Saussure’s barometer on Mont Blanc stood at 16°075 
French 
