MINUTES OF PROCEEDINGS OF 
oi 
however, lliat the contents of one churn are of the same character as those 
of the others. 
The next process is the stoving, and advantage is taken of the method of 
setting the stove to make the whole of one glazing perfectly uniform. The 
powder is set in trays, each tray containing four bowlfuls, or about 16 lbs. 
In filling a tray, a bowlful is taken from each churn, and thus every tray of a 
glazing contains exactly the same powder. The glazings are marked off sepa¬ 
rately in the stove. After stoving, the powder is finished by being revolved 
about 20 minutes in reels which contain four barrels each, and, as the stove 
contains four glazings, this gives the required facility for making the whole con¬ 
tents of a stove uniform, because into each reel can be put one barrel from each 
glazing. No process has been attended with greater certainty in producing 
uniform powder than this system of mechanical mixing. It gives no extra 
work, and requires only a little care and attention on the part of the workmen. 
Though each stoving, however, is perfectly uniform, it will be seen by the 
following proofs that different stovings are by no means of the same character. 
These stovings are selected as giving as near as possible an average of the work 
turned out, some being higher and some lower as regards velocities and 
pressures. 
Stoving. 
Density. 
Experiment. 
M. V. 
Pressures. 
Date. 
No. 
P. 
0. 
26. 6.71 
1-772 
14. 7. 71 
m 
1461 
21-4 
21-6 
19-4 
30. 6. 71 
1-792 
5. 7.71 
627 
1332 
11-5 
11-1 
11-0 
10. 7.71 
1-792 
14. 8. 71 
59 
1385 
14-4 
14-2 
13-8 
29. 7.71 
1-763 
7. 8.71 
38 
1507 
22-8 
20-7 
20-0 
9. 8. 71 
1-758 
18. 8.71 
80 
1400 
14-6 
15-0 
14-4 
18. 8.71 
1-776 
25. 8.71 
101 
1442 
17-8 
l7*o 
16-6 
28. 8. 71 
1-777 
6. 9.71 
134 
1408 
16-3 
16-2 
15-0 
1. 9.71 
1-784 
6. 9.71 
137 
1358 
13-3 
| 13-4 
13-4 
26. 9. 71 
1-762 
9. 10. 71 
225 
1436 
18-4 
18-3 
17-1 
3. 10. 71 
1-753 
13.10. 71 
253 
1440 
17-2 
17-2 
16.7 
18. 10. 71 
1-765 
27. 10. 71 
298 
1438 
18-5 
19-2 
17-1 
1.11. 71 
1-768 
9.11. 71 
336 
,1428 
161 
16-3 
16-4 
13. 11. 71 
1-736 
23.11. 71 
375 
1469 
17-4 
18-4 
17-8 
16. 11. 71 
1-735 
23.11. 71 
377 
1512 
19-9 
| 21-2 
21-0 
17. 11. 71 
1-736 
23. 11. 71 
378 
1534 
25-1 
24-9 
23-5 
17. 12. 71 
1-750 
15. 12. 71 
459 
1438 
14-8 
162 
3 6*1 
15. 12. 71 
1-750 
2. 1.72 
501 
1396 
13-3 
12-3 
12-8 
28. 12. 71 
1-755 
3. 1.72 
524 
1391 
15-1 
14-3 
14-4 
It will be observed that, though a good many of these stovings are within 
the limits of the specification, some are very much too low in velocity, while 
others are too high, both as regards velocity and pressure. Those stovings which 
were too high in velocity or pressure were mixed with others which Vere of low 
velocity and pressure, so as to give a mean result within the specification. 
This was attended with little inconvenience, as long as the mean results of 
proof fell within the specification, but it was rather troublesome when there 
was a long series of proofs of the same character. Some of the proofs, it will 
be observed, are either exceptionally high or exceptionally low. With regard 
to stoving 30. 6. 71, the following note is extracted from the proof-book, in 
Colonel Younghusband's handwriting:—“1000 grs. sample of this powder 
was dried by Mr. Abel for five hours at 200° Fall., resulting in a loss of only 
