Distance of tube from dlsc=8 cm. 
TABLE H. — Height of Flame Varied. 
Charge on 
Mean Diif. 
of 
Potential. 
Abs. Vnluo 
of Diif. of 
Potential. 1 
Remarks on Appearance of the Flame. 
81-73 
31-32 
3002 
30-51 
29-04 
20 70 
28-03 
33-70 
35-14 
Slightly attracted, scintillations ; spark passes through the llame. 
t0 "'-?. r,1s tlle disc which is greatest about 
liulf-w ay up radius of disc ; spark passes to protuberance. 
Protuberance opposite middle, upper part parallel to disc • scin- 
berance” 1,088 streams to thet <>P I spark passes to protu- 
Flame thrown down bolow, when the spark passes. 
No spark in the caso of these three readings. 
Index generally steady for some time before the spark took 
30th Jan. 
(tip.) 
1 
2 
0 
15 
2 
20 
44-90 
28-78 
28-7S 
28 78 
Top of flame repelled down into the body of the flame. 
Ditto. 
Repelled down 8< 
Ditto. 
jverlap the top of the tube. 
Lower part of (lame most affected; flame thrown down 
into ami over tube; index very shaky before the p— ■” 
ing of the spark. 
450 
400 
179 
120 
110 
01 
00 
138 
113 
63 
442 
442 
442 
442 
02 
62 
60 
60 
1030 
101-9 
79-44 
65-04 
30-26 
28-78 
1716 
Tip attracted towards the disc, the yellowness disappears ; no 
sign of any discharge before the passing of a large spark. 
First attracted, then yellowness disappears, then repelled and 
becomes like a blow-pipe flame ; large spark dually. 
Ditto. 
Flame attracted so ns almost to touch, then becomes blue, ami 
becomes diminished as before, taking the form of a twisted 
fang pointing to the disc ; large spark. 
Very nearly touching; good deal of yellow remains, not dimin- 
ished much ; horns at extremity of flame stretching out to 
Touching, remains in contact, carbon deposited on disc for the 
first time ; spark through the flame. 
A still higher (lumo was tried ; contact permanent, with carbon 
deposited on the disc. 
UT 
-I 
CJl 
Proceedings of the Royal Society I of Edinburgh, Session 1881-82. 
