Papérs relating to the Kusion of Carbon. 121 
3. The same. 
4. Two plumbago points were employed, and the usual 
appearances resulted: the two weighing 11 grains lostia 
gain. 
5. The positive pole of charcoal, and negative of plumbago: 
the charcoal lost nearly a grain; the plumbago remained 
the same. 
6. The positive charcoal weighing 6 grains; negative 
plumbago weighing 11 grains: the latter gained 1 a grainand 
was covered with a tuft of melted charcoal ; the positive hav- 
ing a Corresponding hollow, and losing half a grain, exactly 
the amount transferred to the negative. 
7. Fhe charcoal, 6 grains for the negative side, and that for 
the positive weighing 17 grains and ;°; : the former gained one 
fifth of a grain; and the latter lost 9% of a grain. 
8. Positive charcoal 6 grains ; negative plumbago 6 and 
;"5: melted charcoal accumulated upon the plumbago, and 
below were perfectly limpid white globules ; weight the same 
as before ; the charcoal broke, and could not be weighed. 
Experiments on Chareoal which had been ignited bui not boiled 
in acids, March 5, 1825. 
i. Negative pole 14 grains {5 ; positive 11 grains: lost in 
one minute halfa grain; the negative gained nothing, nor 
did it lose. 
2. Negative 103, and positive 10: lost in one minute 7, of 
a grain, and the negative lost ;/,. 
3. Positive 9 grains ; negative 10 grains : lost 3 of a grain; 
the positive lost ,%;,in one minute. 
4. Negative 9,5; ; positive 8,7, of a grain: negative gained 
P53 positive lost 1 grain. 
5s Positive 7} ; negative 93; the same pieces as used in 
(No. 4.): positive lost 7; negative weighed the same. 
6. Negative 9 grains ; positive 6,°,: negative lost 2 of a 
grain ; positive lost 12 grains. 
April 12, 1825—Obtained several projections a quarter of 
an inch long; one of them ,'; of an inch in breadih, and nearly 
ry of a grain in weight. P 
Vou. X.—No IF. 16 
