834 
ME. F. CEACE-CALYERT AXD ME. E. JOH^SOX OX THE 
Amalgams of Bismuth. 
Formula of amalgams, 
Exterior 
Temperature of 
the 50 cub. cent. 
Temperature of the 
50 cub. cent, of water 
Calculated. 
mercuTT 
being 1-7. 
and per-centages. 
temperature. 
of water before 
experiment. 
after 15 minutes, 
from 5 to 5 minutes. 
Ilg BL 1 
Hg 31-82 } 
Bi 68-18 J 
15-5 
l_15-5 
15-2 
15-3 
16- 9 
17- 1 
18-4 
18-0 
19- 8 
20- 0 
2-1 1 
2-2 
2-15 
1-87 
Hg Bio 1 
Hg 23-86 1 
Bi 76-141 
r 15-0 
15-0 
14-8 
14-7 
15-7 
15-6 
16-6 
16-6 
17-4 
17-3 
2-61 
2-6 _ 
2-6 
1-89 
Hg Bq 1 
Hg 19-03 V 
Bi 80-97 J 
ri4-5 
14-8 
14- 9 
15- 0 
15-8 
15-8 
16-7 
16-6 
17-5 
17-5 
2-61 
2-5 
- 2-55 
1-90 
He Bi, 1 
Hg'l5-82 1 
Bi 84-18 J 
1 13-0 
13-6 
13-6 
13-4 
14-35 
14-25 
15-2 
15-1 
15-9 
15-8 
2-3] 
2-4 
. 2-35 
1-91 
On Amalgams which contain an excess of Mercury. 
These amalgams, also prepared in equivalent quantities, were all fluid, owing to the 
circumstance that the proportions per cent, of mercury predominated over those of tin, 
zinc, and bismuth. The conduction of heat by these amalgams was therefore deter- 
mined in the small iron box placed perpendicularly, and the source of heat apphed at 
the upper part of the column ; and this mode of operating has led us to observe the 
curious and interesting fact, that all this class of amalgams have the same, or nearly the 
same, conducting power, viz. from 1‘9 to 2 '3, although the proportions of tin vaiy in 
them from 10‘52 to 22‘98 ; those of zinc from 6-09 to 13-97 ; and those of bismuth from 
17-55 to 34-73. 
All the results obtained with these amalgams being within the limits of 1-9 to 2-3. 
we think it useless to give the details of the experiments. 
Conductihility of Compound Bars. 
In our former paper we described some experiments which we had made with bars 
composed of small cubes of copper soldered alternately with cubes of zinc, tin, and lead, 
having 1 c. m. of surface, and we showed that such compound bars conducted heat as 
indicated by theory. Since then we have pursued our researches, and have formd that 
when compound bars are made of cubes of copper and bismuth, or of copper and anti- 
mony, then they conduct heat no longer in relation with the calculated numbers, as for 
instance — 
xuLinu 
11 r 3 cubes of Copper, 1 cub. cent. 1 _ , _ 
No. 1 bari ^ ^ * . ’ , ^ 9-45 
Lo cubes 01 Antimony, 1 cub. cent.J 
No. 2 bar 
3 cubes of Copper, 1 cub. cent. 
3 cubes of Bismuth, 1 cub. cent. 
Found. 
Calculated. 
9-45 
17-32 
3-40 
13-25A 
. the same 
manner as in the ease of 
