January 1904.] Tests of Forest' Trees. 105 



rows in 1872. The rows extended north and south, with rows of ash, 

 elm, walnut, maple and ailanthus crowding close on each side. The 

 soil is upland prairie, a shallow loam with stiff clay subsoil. The 

 trunks are straight and slender, with small side branches. This is 

 probably the result of crowding. The average of sixty-five Austrian 

 pines was : 



Height 27.3 feet. 



Diameter at ground 8.2 inches. 



at 6 feet 5.5 " 



The best ten Austrian pines averaged : 



Height 34.2 feet. 



Diameter at ground 10 . 25 inches. 



11 at 6 feet 7 " 



In January, 1903, the same ten trees averaged : 



Height 40 feet. 



Diameter at ground 12 inches. 



" at 6 feet 8 " 



The average of the best ten Scotch pines in 1896 was : 



Height 32.7 feet. 



Diameter at ground 9 inches. 



at 6 feet 6 



In January, 1903, the same trees averaged : 



Height 40 feet. 



Diameter at ground 11J inches. 



at 6 feet 7 



In another block of trees, planted a year later, 1873, in the same 

 kind of soil, but without shelter rows, sixty-three Austrian pines aver- 

 aged, in 1896 : 



Height 32 feet. 



Diameter at ground 10 inches. 



at 6 feet 6.66 



In January, 1903, the same block averaged : 



Height 39 feet. 



Diameter at ground 12 inches. 



at 6 feet 8.2 " 



In 1891, blocks of Scotch and Austrian pines were set in rows four 

 feet apart and about four feet in the row. They were at that time 

 from 6 to 12 inches in height. They were given good cultivation, 

 and during the first season were well watered during a drought. 



In February 1896, 319 Scotch pines averaged 7 feet and 6 inches 

 in height and 2J inches in diameter at one foot from the ground. 



At the same date, February 1896, 334 Austrian pines averaged 5 



