APPENDIX B. \\ 



'J 



East Saginaw Salt Manufacturing Company, East Saginaw. 

 Depth of well, 806 feet. Salinometer, 80°. 



Sulphate of lime (gypsum) 0.15 16 



Chloride of calcium 2.2665 



" magnesium 0.9629 



" sodium (salt) 16.8636 



Saline matter 20.2446 



Water 79-7554 



100.0000 



Bangor Salt Manufacturing Company, Banks, Bay Co., Michigan. 

 Depth of well, 774 feet. Brine, 95'' salinometer. 



Sulphate of lime (gypsum) 0.0722 



Chloride of calcium 2.961 1 



" magnesium 1.2612 



" sodium (salt) 19-8595 



Saline matter 24.1540 



Water 75.8460 



100.0000 



These three specimens of brine, as the depth of the wells will 

 show, are from the lower salt-bearing sand rock, called the Napo- 

 leon sandstone by Winchell. The analysis shows a decrease in 

 the percentage of gypsum, an increased percentage of the earth 

 chlorides, and increased quantity of salt. 



These are the representative brines of the Saginaw River, and are 

 those which are mostly worked for their salt. 



Composition of brines taken from wells outside of the Saginaw 

 valley : 



Ayres & Co.'s Salt Well, Port Austin, Huron Co., Michigan. 

 Depth of well, 1198 feet. Brine, 88° salinometer. 



Sulphate of lime 0,0129 



Chloride of calcium 3.1274 



" magnesium 1-5675 



" sodium (salt) 17.6161 



Saline matter 22.3239 



Water 'J7.6'j6i 



100.0000 



