/ 
48 Steam Enghie, 
it satisfies not only the numbers employed in its formation, 
but all the intermediate observations, as may be conclud* 
ed from the following table, which exhibits to every 10 
degrees of Reaumur’s thermometer the barometrical re- 
sults both of observation and the calculus.* 
Tempe- 
rature. 
Pressures given by 
Ano- 
malies. 
Experim. 
Calculus. 
0 
O-OOin. 
O-OOin. 
O-OOin. 
10 
0m5 
0-24 
+0-09 
20 
0*65 
0.69 
+0-04 
30 
1-52 
1-51 
-0-01 
40 
2-92 
2-95 
+0-03 
50 
5*35 
5-42 
+0-07 
60 
9*95 
9-62 
-0-33 
70 
16-90 
16-57 
-0-33 
80 
28-00 
27-92 
-0-08 
90 
46-40 
45-87 
-0-53 
100 
71-80 
71-94 
+0-14 
110 
98-00 
98-36 
+0-36 
The anomalies are generally much more minute than 
in the formulae of four terms: we may therefore regard 
^ Table of the Force of Steam at different Temfieratures of Fah- 
renheifs Scale from actual Exfieriment. 2 Hen. Ch. 518. 
(Bettancourt in Prony’s Architecture Hydrauiique.) 
Tempera- 
Force in English 
Tempera- 
Force in English 
ture. 
Inches of Mercury. 
ture. 
Inches of Mercurv 
32 . . 
. . 0 
162 . . 
. . 9.07 
42 . . 
. . .08 
172 . . 
. . 11.0 
52 . . 
.21 
182 , . 
. . 14.9 
62 . . 
. . .38 
192 . . 
. . 18.7 
72 . . 
. . .58 
202 . . 
. . 23.7 
82 . . 
. . .87 
212 . . 
. . 29.8 
92 . . 
. . 1.26 
222 . . 
. . 37.4 
102 , . 
1.74 
232 . . 
. . 46.5 
112 . , 
. . 2.37 
242 . . 
. . 57.3 
122 . . 
,. . 3.16 
252 . . 
. . 69.7 
132 . . 
. . 4.16 
262 . . 
. . 83.6 
142 . . 
. . 5.43 
272 . . 
. . 97.1 
152 , . 
. . 7.00 
282 . . 
, . 108. 
