APPENDIX B. 



I«I 



" Salt operations in Saginaw valley were first commenced in 

 1859. Through the influence of Dr. George A. Lathrop, the East 

 Saginaw Salt Manufacturing Company was organized in April of 

 that year, and commenced operations in May following. First well 

 completed in March, i860; first salt made in July, i860." 



Soon after passing into the first rock, indications of salt brine 

 were found, and the following table shows the strength of brine ob- 

 tained therefrom at various depths : 



At 90 feet , I degree. 



102 



211 



212 



487 



516 



531 



559 

 569 



606 



6^6 



2 < 



degrees 



10 





14 





26 





40 





44 





60 





64 





86 





90 





An analysis of brine from this well made by Prof. Douglass, on 

 April nth, i860, is as follows: 



Specific gravity i-i79 



Saline matter. 22.017 per ct. 



Chloride of sodium (salt) 17.912 



" calcium 2. 142 



" magnesium 1.522 



Sulphate of lime .116 



Carbonate of iron 105 



Chloride of potassium 220 



Water 77-983 



100.000 



Composition of brines taken from various salt wells on Saginaw 

 River, in October, 1862, and analyzed by Dr. C. A. Goesmann — this 

 investigation being directed to ascertain their commercial value : 



