46 L. S. Hunt on the Chemistry of Natural Waters. 
the relative amounts of the several chlorids in waters from the a 
same region, and even from adjacent sources. These differences — 
are seen on comparing the waters from the different wells of St. _ 
of potassium in the early seas. It will be observed, by referrin 
to the analyses above given, that the chlorid of magnesiu 
‘magnesium which it held in solution; 
from these mother-li 
the mother- 
of calcium, 
