36 BULLETIN 74, U. S. DEPARTMENT OF AGRICULTURE. 
Table 6. — Summary of average rates of speed of steamboats on inland vjaterways. 
Number of average rates reported. 
Rate, miles per hour. 
Atlantic 
slope. 
Mississippi 
Valley, in- 
cluding 
Gulf slope. 
Pacific 
slope. 
Total. 
3 
4 
12 
15 

3 
1 
3 
2 

15 
4 and less than 6 
22 
4 14 
19 
8 and less than 10 
13 
9 
10 
5 
4 

21 
10 and less than 12 
15 
10 
Total 
43 
50 
9 
102 
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