OF STEAM AT DIFFEEENT TEMPEEATIJEES. 
219 
Table of Results reduced from preceding Experiments. 
Number 
of experi- 
ment. 
Maximum temperature 
of saturation, 
Fahrenheit. 
Pressure, in inches 
of mercury. 
Specific volume 
of steam. 
Maximum tempe- 
rature of saturation, 
Centigrade. 
Pressure, 
in millimetres 
of mercury. 
inches. 
1. 
136*851 
136*70 
136*77 
5*361 
5*34 J 
5*35 
8275*3 
58*20 
135*9 
2. 
155*381 
155*28 
155*33 
8*641 
8*61 
8*62 
5333*5 
68*51 
218*9 
3. 
159*351 
9*451 
1 
159*35 
^159*36 
9*45 
^9*45 
4920*2 
70*75 
240*0 
159*40 
9*46 
1 
4. 
170*881 
170*96 J 
170*92 
12*461 
12*48 
• 12*47 
3722*6 
77*18 
316*7 ; 
5. 
171*521 
171*44 J 
. 171*48 
12*63 1 
12*60 
■ 12*61 
3715*1 
77*49 
320*3 
6. 
174*92 
13 62 
3438*1 
79*40 
346*0 
7 . 
182*26 
182*34 J 
. 182*30 
16*01 1 
16*02 J 
> 16*01 
3051*0 
83*50 
406*7 
8. 
188*30 
18*36 
2623*4 
86*83 
466*4 
9. 
198*78 
22-88 
2149*5 
92*65 
581*1 
Section III. — Gen&i'alization of Besults. 
As we purpose to extend these experiments to steam of very high pressure, and to 
institute a distinct series of experiments on the law of expansion of superheated steam, 
any elaborate generalizations of the results of the present series of experiments would 
be premature. In the mean time, however, we give the following general summary of 
results. 
On the BeJation of Specif c Volume and Pressure of Saturated Steam. 
Let V be the specific volume of a given weight of saturated steam, at the pressure P, 
measured by a column of mercury in inches ; then 
and 
V=25-62 
495 1.S 
v P + -72 
(7.)* 
p= 
49513 
V — 25*62 
•72 
( 8 .) 
The following Table shows that formula (7.) represents with considerable accuracy 
the results of our experiments, and also that they are for the most part perfectly con- 
sistent with one another. 
These formulse, expressed in French millimetres instead of EngUsh inches, would be 
V= 
P= 
25-62 + 
1257605 
P + 18-29 
1257605 
V-25-62 
-18-29 
( 10 .) 
( 11 ) 
2 Q 2 
