86 
PROFESSOR W. RAMSAY AND DR, S. YOUNG 
Orthobaric Volumes of 1 gramme of Vapour .—The following Table gives the 
volumes of 1 gramme of the saturated vapour at even temperatures, with the 
corresponding specific gravities and vapour-densities. 
Temperature. 
Volume of 
1 gramme. 
Specific 
gravity. 
Vapour- 
density. 
Temperature. 
Volume of 
1 gramme. 
Specific 
gravity. 
Vapour- 
density, 
O 
0 
c.cs. 
1209*1 
0-000827 
37-95 
O 
105 
C.CS. 
47*62 
0-02100 
45-35 
5 
973-6 
0-001027 
38-00 
110 
42-57 
0-02349 
46-05 
10 
791-1 
0-001264 
38-10 
115 
38-02 
0-02630 
46-95 
15 
646-6 
0-001547 
38-35 
120 
34-09 
0-02934 
47-8 
20 
534-7 
0-001870 
38-5 
125 
31-30 
0-03195 
48"75 
25 
436-2 
0-002293 
38-6 
130 
27-49 
0-03638 
49-75 
30 
373-6 
0-002677 
38-9 
135 
24-73 
0-04044 
50-85 
35 
316-2 
0-003163 
39-05 
140 
22-28 
0-04488 
52-0 
40 
268-0 
0 003731 
39-4 
145 
20-03 
0-04992 
53-4 
45 
229-5 
0-004358 
39-6 
150 
18-01 
0-05551 
54-95 
50 
196-9 
0-005079 
39-95 
155 
16-18 
0-06179 
56-7 
55 
170-3 
0-005886 
40-2 
160 
14-47 
0-06911 
58-9 
60 
147-7 
0-006771 
40-5 
165 
12-90 
0-07754 
61-5 
65 
128-4 
0-007790 
41-0 
170 
11-45 
0-08731 
6455 
70 
112-1 
0-008920 
41-45 
175 
10-12 
0-09879 
68-2 
75 
98-33 
0-01017 
41-9 
180 
8-815 
0-1135 
73-25 
80 
86-60 
0-01155 
42-35 
185 
7-579 
0-1320 
79-75 
85 
76-56 
0-01306 
42-8 
190 
6-172 
0-1620 
91-45 
90 
67-70 
0-01477 
43-4 
192 
5-476 
0-1826 
100-2 
95 
60-14 
0-01663 
43-95 
193 
4-970 
0-2012 
108-7 
100 
53-55 
0-01867 
44-55 
The curves showing the relations given in the preceding Tables between specific 
gravity and temperature of liquid and vapour are represented in Plate 10, and the 
volumes of 1 gramme of liquid and vapour are shown in Plate 9, but mapped against 
pressure. 
