STATE GEOLOGIST. 1st 



l)r. Houghton in his report of i s ."'» s . gave the results of 

 analyses of 10 different brine springs from our State, two of 

 which have been reproduced in the table. Of these springs, 



were situated upon the Tittabawasaee river, in Midland 

 county, seven near the Grand river, two near the 



ition of Maple river, in Gratiot COUnty, two near the 

 Maple river, in Clinton county, and one Dear the Saline river, 

 in Washtenaw county. The solid constituents of these brines 



contained from 58 to - s 7 per cent, of puie salt, the general 



being 70 to 86 per cent. The purest brine was found on 



D 14, T. 15 N., 1 W., Midland county, on the the Tittaba- 



i.alf a mile above the niMith of Salt river. 



The following table will also prove useful for general refcr- 



