CONDUCTIBILITY OF MEECUEY AND AMALGAMS. 833 
relations when examined under the same volumes, that they deserve especial notice. 
Thus — ■ 
Heat. Electricity. 
Silver 100-00 100-00 
Mercury .... 6-33 2-12 
On the Conductibility of Solid and Semi-solid Amalgams, or in ivMch exists an excess of 
the Amalgamated Metal. 
The amalgams belonging to this series were prepared with equivalent quantities of 
pure metals, and their conductibility for heat confirms the figure (54) which we now 
publish as representing the conductibility of mercury, silver being 1000. In fact the 
observed conductibihty of heat by these amalgams agrees perfectly with the theoretical 
quantities, whilst there exists a great difference between them when we adopt 677 as 
repiesenting the conductibility of mercury. The calculated numbers are obtained, as 
in the former paper (p. 358), by multiplying the conducting powers of the respective 
metals by the weights, and dividing by the sum of the weights. 
1 Formula of amalgams, 
j and per-centages. 
HgSng 
Hg 45*88 
Sn 54*12 
HgSng 
Hg .36*18 
Sii 6.3*82 
HgSn^ 
Hg 29*84 
Sn 70*16 
HgSnj 
Hg 25*38 
Sn 74*62 
Exterior 
temperature. 
15*0 
14*8 
15*0 
15*0 
ri4. 
Il5* 
16*0 
16*0 
Amalgams of Tin. 
Temperature of 
the 50 cub. cent, 
of water before 
experiment. 
Temperature of 
the 50 cub. cent, of water 
after 15 minutes, 
from 5 to 5 minutes. 
Found. 
Mean. 
Calculated, 
mercury 
being 1-7. 
1°4*5 
18*0 
20*8 
23*1 
8*6 1 
14*6 
18*2 
20*9 
23*3 
8*7 J 
8*65 
8*11 
15*1 
18*9 
21-9 
24*5 
9*41 
15*5 
19*4 
22*3 
25*0 
9*5 j 
9-45 
9-2 
13*1 
16*9 
20-1 
22*8 
9*71 
14*9 
18*8 
21*9 
24-5 
9 6/ 
9*65 
9*95 
14*9 
19*1 
22*5 
25*2 
10*31 
15*11 
19*4 
22*8 
25*4 
10*3 j 
1 0*6 
10*5 
Amalgams of Zinc. 
i 
Formula of amalgams, 
Exterior 
Temperature of 
the 50 cub. cent. 
Temperature of 
the 50 cub. cent, of water 
Found, 
Mean. 
Calculated, 
and per-centages. 
temperature. 
of water before 
experiment. 
after 15 minutes, 
from 5 to 5 minutes. 
mercury 
being 1'7. 
HgZn, "1 
o ^ o o 
Hg 60*63 > 
/ 16*0 
19*6 22*8 25*6 
9*61 
9-70 
8*97 
Zn 39*37 J 
Hg Zn., i 
Hg 54*70 ^ 
Zn 45*30 J 
\15*3 
/ 16*1 
117*1 
18*9 22*2 25*1 
9*8 / 
19*7 23*4 26*6 
20*9 24*5 27*5 
10*5 1 
10*4/ 
10*45 
10*05 
HgZnj q 
Hg 43*50 y 
Zn 56*50 J 
/ 14*3 
117*5 
18*4 22*1 25*4 
21*0 25*2 28*4 
11*11 
10*9/ 
11*00 
12*08 
Hg Zn, q 
/ 17*1 
1 16*2 
Hg 38*1 1 1 
Zn 61*89 J 
22*6 27-2 31*0 
21*7 26*3 30*2 
13*91 
14-0/ 
13*95 
13*05 
5 R 
MDCCCLIX. 
