52 PRINCIPLES OF AMERICAN PORESTRY. 



necessarily be open to some criticism. Lists of this sort 

 should be regarded as suggestive only, and the intelligent 

 planter will naturally obtain in addition the experience 

 of tree-planters in his locality before deciding on the kinds 

 to plant. Herewith are given lists of trees for the northern 

 prairie States, as there is commonly a lack of such infor- 

 mation among the people of that section. 



For Porous Moist Soils in Southern Minnesota and 

 Northern Iowa. White Elm, Black Walnut, Green Ash, and 

 Hard Maple in equal quantities, with a scattering of the 

 fruit plants. The Hackberry may wholly or in part take 

 the place of the White Elm, and the Box-elder the place of 

 the Green Ash. The White Willow, Basswood, and Soft 

 Maple would also do well in such a location. One of the 

 main kinds might be replaced by the White or Norway 

 Spruce, Douglas Fir, or White Pine. In fact such land as 

 this will grow any of the trees adapted to this section. 



For Dry Prairie Soils in Southern Minnesota and North- 

 ern Iowa. Green Ash, Box-elder, White Elm, and White 

 Willow in equal quantities, with a scattering of fruit plants. 

 Basswood and Hackberry might be used to a limited extent, 

 and White Spruce, Red Cedar, Norway Pine, White Pine, 

 or Scotch Pine might be used in the place of one of the main 

 kinds. 



For Moist, Porous Prairie Soils in Northern Minnesota 

 and the Dakotas. White Willow, White Elm, Box-elder, 

 Basswood, and Green Ash in equal quantities, with a scat- 

 tering of fruit plants. In some localities it might be best 

 to use Cottonwood on the outside of the grove. The Hack- 

 berry might take the place of part of the White Elm and 

 White Spruce, Arborvitse, Norway Pine, Bull Pine, Red 

 Cedar, and some other conifers might be used to a limited 

 extent. 



For High Prairie Soils in the Dakotas. Cottonwood, 

 White Willow, Box-elder, and White Elm in equal quan- 



