108 RURAL MICIIKIAN 



corded by the United States Geological Survey, as 

 yielding 931,343 gallons of mineral water. In 1919 

 the number reported was ten springs yielding 1,570,- 

 906 gallons. These springs were located at Saginaw, 

 Grand Eapids, Mt. Clemens, Maltby, Ogemaw 

 County and Xorthville, Wayne County. The total 

 value of these waters in 1919 was put at $132,312, 

 at an average price of eight cents a gallon.^ The 

 Michigan Geological Survey notes a progressive de- 

 crease in the output of these waters since the high 

 point of more than 8,000,000 gallons in 1902. As 

 they are chiefly potable rather than medicinal, local 

 conditions related to the water supply have their in- 

 fluence on the demand for these mineral waters.- 



Some nine miles from L'Anse in Baraga County 

 is a deposit of graphite which has been worked in- 

 termittently for some years. This graphite is of 

 too low a grade for lubricating purposes, but it has 

 been used in the manufacture of paint. In the 

 vicinity of the old Eopes Gold Mine near Ishpeming 

 is a deposit of low-grade asbestos, as yet unworked. 



If Michigan is poor in its coal resources, it is even 

 more inadequately provided with oil and gas, so far 

 as existing knowledge goes. There are a number 

 of wells within the city limits of Port Huron, ap- 

 parently an extension of the Ontario field. The oil 

 from one group of these wells is consumed in the 

 manufacture of lubricants, for which it is said to be 



*U. S.Geol. Survey: "Mineral Waters in 1918," 515. 

 ^Mich. Geol. Survey: "Production and Value of Mineral 

 Products in Michigan," Lansing, 1917, 184. 



