[2] According to the report of the State Geological Survey, the value of the total mineral product in the state for 1907 was $152,122,648, the values of the different minerals being as follows: coal, $54,687,382; pig iron, about $52,228,000; petroleum, $16,432,947; clay and clay products, $13,351,362; zinc, $6,614,608; limestone, $4,333,651; Portland cement, $2,632,576; sand and gravel, $1,367,653; natural slag, $174,282; fluorspar, $141,971; mineral waters, $91,700; lead ore, $45,760; sandstone, $14,996; and pyrite, $5700. [3] See the so-called _McLean County Case_ (67 Ill. 11), the _Neal Ruggles Case_ (91 Ill. 256), _The People_ v. _The Illinois Central Railroad Co._ (95 Ill. 313), and _Munn_ v. _Ill._ (94 U.S. 113). [4] The populations in other census years were: (1810), 12,282; (1820), 55,211; (1830), 157,445; (1840), 476,183; (1850), 851,470; (1860), 1,711,951; (1870), 2,539,891; (1880), 3,077,871. [5] The influence of immigration and sectionalism upon Illinois politics is well illustrated by the fact that the first six governors (1818-1838) were born in the Southern states, six of the eight United States senators of that period were also Southern born, and all of the representatives, with one exception, also came to Illinois from the Southern states. After 1838 the Eastern states began to be represented among the governors, but until 1901 no governor was elected who was a native of Illinois. See E. B. Greene, _Sectional Forces in the History of Illinois_ (Publications of the Historical Library of Illinois, No. 8, 1903). [6] In the slavery issue of 1848 the sentiment for abolition centred in the northern counties, the opposition in the southern. [7] Mr French's service of seven years is due to the fact that the Constitutional Convention of 1848 ordered a new election of state officials. French was re-elected Governor, beginning his new term in 1849.