The figure on page 2 gives the location of each wood plantation with 

 reference to the rest of the exhibit. 



Plat 1, planted 4 feet apart with equal parts of hackberry and green 

 ash, is intended to illustrate one of the best broadleaf mixtures for 

 the arid plains from Texas to North Dakota. The ash will produce 

 valuable timber, while the hackberry will furnish fuel from thinnings, 

 afford shade, and add humus to the soil, thus improving the forest 

 conditions of the locality. The distance of 4: feet apart will allow the 

 trees to establish a forest cover at the earliest possible time, making 

 long-continued cultivation unnecessary. 



Plat 2 is planted 4 feet by 8 feet, with honey locust and white elm 

 in equal proportions. This mixture is composed of very hardy species, 

 suited to the western prairies of Kansas, Nebraska, Oklahoma, and 

 Texas. The unequal spacing in one direction is to allow of long- 

 continued cultivation, since it is very frequently advisable in this 

 region to prolong the period of cultivation, even to the maturity of the 

 crop, to conserve the soil moisture. The honey locust, which grows 

 very rapidly, will afford valuable timber for fence posts and other 

 farm uses, while the more slowly growing elm, as an understory, will 

 furnish shade and increase the humus in the soil. 



Plat 3 is planted 4 feet by 6 feet, with a mixture of green ash and 

 white elm in equal proportions. This mixture is adapted to a large 

 region in the semiarid plains, from Texas to Canada. Its good quali- 

 ties are very similar to those of the plantation on plat 1, the elm taking 

 the place of the hackberry. As in the mixture on plat 2, the unequal 

 spacing will allow long-continued cultivation. 



The trees on plat 4 are planted 4 feet apart, and consist of equal 

 proportions of bur oak and hackberry. This mixture is suited to the 

 high prairies of the semiarid plains from Kansas to Canada, and is com- 

 posed of the hardiest deciduous trees indigenous to the region. These 

 species, however, grow very slowly, their slow growth being one of 

 their good qualities, since it enables them to persist in soils so sterile 

 that other species would be absolutely out of the question. 



Plat 5 is planted with red cedar and western yellow pine in equal 

 proportions. This plantation illustrates the use of the hardiest conif- 

 erous species suited to the semiarid plains east of the Rocky Moun- 

 tains. The trees are planted 4 feet apart each way, in order to secure 

 the very desirable shade and forest litter so necessary to the establish- 

 ment of forest conditions. The cedar can be cut out and used for 

 fence posts, and the pine left as the permanent stand. This mixture 

 would be just as desirable for a windbreak as for a woodlot plantation. 



Plat 6 has been planted 4 feet by 6 feet with equal proportions of 

 black locust and Russian mulberry, representing a mixture suited to 

 the southern half of the semiarid plains. Both of these species afford 

 excellent timber for fence posts, are very drought resistant, and grow 



