212 ©. A. Goessmann on the Onondaga Mineral Springs. 
depth of from twenty-five to thirty feet. These formations, par- 
ticularly near the outcrops of the Onondaga shales, or at the ter 
mination of their surface drainage, are frequently found to be 
filled with an abundance of water of a peculiar saline character. 
ese waters sometimes contain only mere traces of chlorids, 
while in those from other similar localities in their vicinity a 
considerable amount of chlorid of sodium may be observed. 
Among the questions to which these facts give rise, the fol- 
lowing appeared to me of great interest: 
First: Xs there any relation between the chemical composition 
of the spring waters peculiar to the locality, and the brines? 
Second: What chemical changes may result from their union, 
should their composition materially differ. 
Third: Do the waters of the springs and the brines derive their 
characteristic qualities from soilor rocks of one and the same 
kind, though in different conditions; or do they both owe their 
peculiar chemical composition to entirely different sources; and 
if so, where are these sources located ? 
remote from the t brine-supplyi istrict —contends 
strongly in favor of a previous gradual extraction of larger quan- 
tities of more le saline compounds (chlorid of sodium in 
idinger. Mittheilungen, ete., November 12,1846, Wien, This Journal, 
to the Hon. Geddes fo valuable map of the 
outlines of the geology of Onondaga County. 
ees OF PI oe ee OS 
