Molecular Constants. 
Table I. 
337 
Zinc. Per cent. 
Lead. Per cent. 
Tin. Per cent. 
1 (bottom) 
{«}<*** 
{882} ■»« 
fO-13 1 
^ 0-21 I 0-171 
L 0-174 J 
2 
{SS}«HW 
3 
{S3g}.o« 
{818} « 
4 
{%*} 0-122 
5 
{8-1?!} o» 
{8S} o-io 
6 
{851} *» 
7 
{S} «"«3 
{oS} °*> 
8 
{S} ' 260 
9 
f 0-337 1 
J 0-33S I 0-333 
[ 0-325 J 
{S} 0-028 
{?:»?} i-oo 
10 
{K}»» 
11 
{«:«!} 0-461 
{JS} °« 
f 1-68 i 
{ 1-41 
[1-25. 
1-45 
12 
{88} 0' 671 
{SSS}^ 
{If} 143 
f 1 ' 86 1 
\ 1-87 I 1-83 
I 1-76 
§ 33. It appears accordingly that the three metals lead, 
tin, and zinc, all of which and all of whose amalgams are 
lighter than mercury, diffuse downwards through this latter 
metal in such a fashion that they appear, after a month's 
interval, in appreciable quantity at a depth of a foot beneath 
the surface when the temperature is about 16°-17° C. 
With regard to this latter point, as to temperature, I suppose 
that mercury is so good a conductor of heat that the influence 
Phil. Mag. S. 5. Vol. 16. No. 101. Nov. 1883. 2 B 
