430 Proceedings of the Royal Society 
Table III . — Second Series — continued. 
" Bismuth, 
flannel and hand. 
Magnesium, 
emery, flannel, hand. 
Zinc, 
emery, flannel, hand. 
+ 20 
28 
55 
+ 46 
45 
54 
+ 35 
53 
30 
+ 32 
40 
50 
+ 15 
58 
80 
70 
Mean +30 
80 
Mean 54 
76 
1 
Whisked, 
gave 
Whisked . 
negative electricity. 
Mean 56 
60 
28 
50 
SO 
44 
18 
30 
0 
Mean 46 
+ 20 
.^10 
Whisked. 
60 
70 
30 
60 
60 
Mean 36 
50 
1 
1 
1 
Mean 60 
On the 27th the following observations were taken (Table IV.). 
With flannel for the rubber only lead and bismuth were positive, 
Table IV. 
Flan- 
nel. 
Hand. 
Sub 
phur. 
Caout- 
chouc. 
Sealing 
Wax. 
State of Metal. 
Gold, . 
+ 
No scratches. 
Tin, 
- 
- 
+ 
+ 
+ 
Wax and other. 
Copper, . 
- 
- 
+ 
+ 
+ 
Wax. 
Silver, . 
- 
- 
+ 
+ 
- 
Few wax. 
Lead, 
+ 
- 
+ 
+ 
+ 
Wax and other. 
Brass, . 
- 
- 
+ 
+ 
- 
Wax. 
Iron, 
- 
- 
+ 
+ 
+ 
Many, mostly 
wax. 
Zinc, 
Nickel, . 
- 
- 
-!■ 
+ 
+ 
Wax and other. 
- or + 
(very small) 
+ 
+ 
+ 
None. 
Antimony, 
- 
- 
+ 
+ 
- 
N one. 
Bismuth, 
+ 
+ 
+ 
+ 
+ 
Wax and other. 
Aluminium, . 
- 
- 
+ 
+ 
+ 
Wax and other. 
Magnesium, . 
- 
- 
+ 
+ 
+ 
Wax and other. 
German Silver, 
~ 
+ 
+ 
None. 
with the hand only bismuth. These are undoubtedly anomalies, 
caused, I believe, by the abrasion of the metal. The exceptional 
