FOOD FOR PLANTS 



193 



Length of Navigation of the Mississippi River. 



The length of navigation of the Mississippi River 

 itself for ordinary large steamboats is about 2,161 

 miles, but small steamers can ascend about 650 miles 

 further. The following are its principal navigable 

 tributaries, with the miles open to navigation : 



Siiles 



Minnnesota 295 



Chippewa 90 



Iowa 80 



Missouri 2,900 



Big Horn 50 



Allegany 325 



Muskingum 94 



Kentucky 105 



Wabash 365 



Tennessee 270 



Osage 302 



White 779 



Little White 48 



Big Hatchie 75 



Sunflower 271 



Tallahatchie 175 



Red 986 



Cypress 44 



Black 61 



Bartholomew 100 



Macon 60 



Atchafalaya 218 



Lafourche 168 



Idiles 



Wisconsin 160 



Rock 64 



Illinois 350 



Yellowstone 474 



Ohio 950 



Monongahela 110 



Kanawha 94 



Green 200 



Cumberland 600 



Clinch 50 



St. Francis 180 



Black 147 



Arkansas 884 



Issaquena 161 



Yazoo 228 



Big Black 35 



Cane 54 



Ouachita 384 



Boeuf 55 



Tensas 112 



Teche 91 



D'Arbonne 50 



The other ten navigable tributaries have less than 

 fifty miles each of navigation. The total miles of 

 navigation of these fifty-five streams is about 16,500 

 miles, or about two-thirds the distance around the 

 world. The Mississippi and its tributaries may be 

 estimated to possess 15,500 miles navigable to steam- 

 boats, and 20,221 miles navigable to barges. 



