474 PROFESSOR W. RAMSAY AND DR. S. YOUNG ON THE INFLUENCE OF 
Series I. 
A. 
B. 
Mean of A. 
Mean of B. 
A corrected 
(ice). 
B corrected 
(water). 
Difference. 
Mean pressure. 
Observed. 
Calculated. 
Observed. 
Calculated. 
o 
O 
O 
O 
O 
O 
O 
O 
millims. 
millims. 
f —2-08 
-2-69 
i 
-2-01 
-2-61 
-2-00 
-2-61 
-211 
-2-35 
0-24 
0-28 
3-80 
3-88 
-1-92 
-2-54 
r -3-20 
-4-00 
L -316 
-3-94 
-3-18 
-3-97 
-3-29 
-3-67 
0-38 
0'46 
3-50 
352 
r -3-42 
-4-24 
1 
L -3-39 
-4-21 
-3'40 
—4-22 
-3-51 
-3-92 
0-41 
0-50 
3-25 
CO 
r-4-i2 
-5-07 
-4-10 
-5-04 
■< 
-4-03 
-5-00 
-4-07 
-5-03 
-4-18 
-4-71 
0-53 
0-62 
3-20 
3-26 
-4-07 
-5-02 
^-4-04 
-5-01 
Series II. 
A. 
c. 
Mean of A. 
Mean of C. 
A corrected 
(J corrected 
Difference. 
Mean pressure. 
(ice). 
(water). 
Observed. 
Calculated. 
Observed. 
Calculated. 
o 
0 
millims. 
millims. 
J 
- 3-34 
- 3-52 
+ 3-09 
+ 2-95 
- 3-51 
- 4U4 
0-63 
0 ' 5o 
— 
-* 
- 3-32 
+ 3-15 
- 3-42 
+ 3-05 
- 3-59 
- 4-18 
0-59 
0-56 
3-62 
3-40 
- 2-80 
f - 2-26 
+ 3-84 
+ 4-40 
- 2-97 
- 3-39 
0*42 
0-43 
3-77 
3*60 
1 - 2-14 
f - P79 
+ 4-51 
+ 4-96 
1 
to 
to 
o 
+ 4’45 
- 2-37 
- 2-78 
0-41 
0-35 
3-95 
376 
] - 1-70 
+ 5-05 
- 1-74 
+ 5-00 
- 1-91 
- 2-23 
0-32 
0-27 
4-17 
3-92 
J 
- 1-12 
r - 0-82 
+ 5-67 
+ 6-15 
- 1-29 
— 1*56 
0-27 
0*20 
4-17 
4Y2 
1 
J 
- 0-83 
- 0-07 
+ 6-15 
+ 6-95 
- 0-83 
+ 6*15 
-1-00 
- 1-08 
0-08 
0-16 
4-30 
4-26 
[ - 0-05 
+ 6-98 
- 0-06 
+ 6-96 
- 0-23 
- 0-27 
0-04 
0*04 
— 
— 
- 0-03 
+ 7-00 
- 0-20 
- 0-23 
0-03 
0-03 
— 
— 
-o-oo 
+ 7-05 
- 0-17 
- 0-18 
o-oi 
0*02 
— 
— 
+ 0-02 
+ 7-08 
— 0T5 
- 0-15 
o-oo 
0-02 
— 
— 
+ 0-05 
+ 7-10 
- 0-12 
-013 
o-oi 
o-oi 
— 
- - 
+ 0-10 
+ 7-15 
- 0-07 
- 0-08 
o-oi 
o-oi 
— 
— 
+ 0-13 
+ 7-20 
- 0-04 
- 0-03 
-o-oi 
0*01 
— 
— 
+ 0-17 
+ 7‘25 
o-oo 
+ 0-02 
- 0-02 
0-00 
— 
— 
+ 0-17 
+ 7-30 
o-oo 
+ 0*07 
- 0-07 
o-oo 
— 
— 
+ 0-17 
+ 7-35 
• • 
o-oo 
+ 0-12 
- 0*12 
o-oo 
— 
34. As the differences between the vapour-pressures of ice and of water given 
in the previous tables are generally greater than those calculated by Professor 
Jas. Thomson from Regnault’s empirical formulae, we proceeded to calculate the 
theoretical curve by the method given by Professor Thomson, which may be expressed 
by the formula 
