64 DR. W. A. BONE AND MR. R. V. WHEELER ON THE COMBINATION OP 
Experiment Y. 
_ 
Reduction of “oxidised” gauze by hydi’ogen at 214°. 
1st charge. 
2nd charge. 
t. 
P. 
h* 
t. 
P. 
h* 
minutes. 
millims. 
minutes. 
millims. 
0 
374-3 
— 
0 
334-3 
— 
10 
208-3 
1-5288 
10 
176-3 
1-6692 
20 
108-3 
1-6188 
20 
103-3 
1-5600 
30 
50-3 
1-6272 
30 
53-3 
1-5960 
40 
22-3 
1-7472 
40 
25-3 
1-6896 
50 
8-3 
1-9116 
45 
16-3 
1-7592 
60 
2-3 
2-1600 
2 nd Series. 
In order to confirm the results of the previous experiments as regards the striking 
difference between the rate of steam formation with electrolytic gas and copper 
oxide, and the rate of reduction of the oxide by hydrogen, the gauze was thoroughly 
re-oxidised at 450°, and subsequently comparative experiments with (1) normal 
electrolytic gas, and (2) a mixture of hydrogen and nitrogen corresponding very 
nearly to 2H 2 + N 2 , were made at 214°, as follows:— 
Experiment VI. 
Experiment YII. 
October 18, 1904. 
Normal electrolytic gas over “ 
gauze. T = 214b 
oxidised ” 
October 19, 1904. 
Mixture 2H 2 + N 2 over “oxidised” gauze. 
T = 214°. 
t. 
1 
P. 
h- 
t. 
P. 
P H,. 
/j H 2 .t 
hours. 
millims* 
minutes. 
millims. 
millims. 
0 
364-5 
— 
0 
395-7 
263-8 
— 
1 
316-1 
0-0619 
10 
313-2 
181-3 
0-9774 
2 
257-0 
0-0759 
20 
248-2 
116-3 
1-0671 
3 
195-4 
0-0912 
30 
207-6 
75-7 
1-0844 
4 
151-4 
0-0964 
40 
183-1 
51-2 
1-0680 
5 
111-6 
0-1028 
50 
166-8 
34-9 
1-0542 
60 
162-8 
30-9 
0-9313 
90 
141-4 
9-5 
0-9624 
* In order to make these values comparable with those given in other experiments, they have been 
calculated on the basis of an hour as the unit of time, 
t Calculated on the basis of an hour as the unit of time. 
