600 
PROFESSOR GRAHAM ON THE MOTION OF GASES. 
containing only 0’65 grain of mercury ; which gives a diameter of 0 - 00539 inch, or 
about Tireth °f an i nc h. Experiments were made with portions of this tube of 
different lengths ; and first with a portion only 1 inch in length, in which it was 
expected that the influence of effusion would be considerable, from its approach to 
an aperture in a thin plate. 
Table XIV. — Transpiration by Capillary C (1 inch long) into a one-pint jar. 
Barom. 28*81. Temp. 60°. 
Gauge barometer in inches. 
Air. 
Oxygen. 
Hydrogen. 
Carbonic acid. 
1 . 
II. 
I. 
II. 
I. 
II. 
I. 
// 
// 
// 
// 
// 
// 
// 
28 
0 
0 
0 
0 
0 
0 
0 
20 
248-5 
249 
273 
271-5 
108 
108 
237*5 
12 
283 
281-5 
308-5 
308-5 
126 
127 
261 
8 
186-5 
185-5 
204-5 
206 
87 
87 
167 
4 
284 
286 
315-5 
314 
136 
137 
244 
2 
270-5 
266-5 
301 
302 
133 
132 
227 
From 28 to 2 inches 
1272-5 
1268-5 
1402-5 
1402 
590 
591 
1136-5 
Mean Results. 
From 28 to 
From 28 to 
From 20 to 
From 12 to 
From 8 to 
From 4 to 
From 28 to 
Gauge barometer. 
Air. 
Hydrogen. 
Carbonic acid. 
20 inches 
12 inches 
12 inches 
8 inches 
4 inches 
2 inches 
2 inches 
f Time in seconds 
248-75 
[ Time of oxygen = 1... 
0-9138 
f Time in seconds 
531 
[Time of oxygen = l... 
0-9139 
j Time in seconds 
282-25 
[Time of oxygen =1... 
0-9149 
f Time in seconds 
186 
[Time of oxygen = l... 
0-9063 
f Time in seconds 
285 
[Time of oxygen =1... 
0-9054 
f Time in seconds 
268-5 
[Time of oxygen = 1... 
0-8905 
f Time in seconds 
1270-5 
[Time of oxygen =1... 
0-9060 
108 
0-3967 
234-75 
0-4040 
126-5 
0-4100 
87 
0-4238 
136-5 
0-4339 
132-5 
0-4374 
237-5 
0-8725 
498-5 
0-8594 
261 
0-8460 
167 
0-8138 
244 
0-7751 
227 
0-7529 
590-5 
0-4211 
1136-5 
0-8104 
Table XV. — Transpiration by Capillary C (2 inches long) into a half-pint jar. 
Barom. 29'32. 
Gauge barometer in inches. 
Air. 
Oxygen. 
Hydrogen. 
I. 
II. 
I. 
II. 
I. 
II. 
// 
// 
// 
// 
// 
// 
28 
0 
0 
0 
0 
0 
0 
20 
211-5 
211-5 
234 
234 
101-5 
102 
12 
254 
254 
281-5 
281 
124-5 
124 
8 
176-5 
176-5 
196 
197 
88 
88 
4 
280-5 
280-5 
321-5 
320 
141 5 
138 
2 
273 
272 
301 
302 
141 
146 
From 28 to 2 inches 
1195-5 
1196 
1334 
1334 
596-5 
598 
