72 
Transactions Texas Academy of Science. — 1906. 
States and Groupes of States. 
Length of Railroads — Miles. 
1840 
1850 
1860 
Minnesota 
Nebraska 
Wyoming 
Northwestern 
665.00 
California . 
23.00 
Oregon 
Nevada . ... . . 
Utah 
Pacific . 
23.00 
Total United States 
3106.08 
9021.00 
30626.00 
APPENDIX B. 
The following table exhibits the progress made annually in railroad construc- 
tion in the United States from 1849 to 1860. 
Year. 
Miles in Operation. 
Increase of Mileage. 
1849 
7,365 
1,369 
1850 
9,021 
1,656 
1851 
10,982 
1,961 
1852 
12,908 
1,926 
1853 
15,360 
2,452 
1854 
16,720 
1.360 
1855 
18,374 
1,654 
1856 
22,016 
3,642 
1857 
24,503 
2,487 
1858 
29,968 
2,465 
1859 
28,789 
1,821 
1860 
30,635 
1,846 
APPENDIX C. 
The following table 
shows the miles of railway 
in operation in Texas at the 
end of each year, and the annual increase down to 
the Civil War. 
End of the Year. 
Miles in Operation. 
Increase over Previous Year. 
1854 
32 
1855 
40 
8 
1856 
71 
31 
1857 
157 
86 
1858 
205 
48 
1859 
284 
79 
1860 
307 
23 
