4 UNIVERSITY OF MISSOURI STUDIES 



1892 32,108 



1893 28,970 



Ig94 23,335 



1895 21,529 



1896 17,068 



1897 26,042 



1898 31,306 



1899 41^894 



1900 67,680 



1901 20,950 49,070 



1902 31,334 61,668 



1903 23,178 50,397 



1904 25,498 65,727 



1905 26,761 48,235 



1906 28,869 50,231 



1907 44,039 89,621 



1908 16,319 38,527 



1909 34,815 58,377 



1910 22,978 42,975 



1911 21,500 38,445 



1912 24,530 37,478 



1913 31,131 45,298 



1914 33,317 51,317 



1915 39,113 108,547 



1916 58,223 221,952 



These figures are those of the United States Geological Sur- 

 vey and are not exactly in agreement with those of the state geo- 

 logical survey. However, they are probably as accurate, because 

 actual figures of production are hard to obtain with the present 

 method of mining and selling the barite. The 100 per cent in- 

 crease in 1915 and 1916 is notable. 



GEOGRAPHY OF THE WASHINGTON COUNTY 



DISTRICT 



LOCATION OF THE BARITE AREAS 



The barite deposits of Missouri occur in two areas, the more 

 important being the Washington County district, and the less im- 

 portant the central district. The first lies mostly in Washington 



