2% forestry Quarterly 



COSTS PER ACRE- (36 ACRES) 

 Species 



Total 



YeUowpine $11.78 $10.13 $2.23 $8.89 $21.25 



Sugar pine 12.41 10.67 2.23 8.89 21.79 



Incense cedar 20.30 17.46 2.23 8.89 28.58 



Average apportioned by number of each species $21. 53 



According to the latest data available from the nursery, the 

 costs of raising stock have been materially reduced. By planting 

 the accessible brush areas first, thereby reducing transportation 

 charges, and by planting less trees per acre, the cost of establish- 

 ing a plantation could, if undertaken on a commercial scale, be 

 reduced considerably. 



RESULTS 



Both areas were examined by the writer in July, 1914, about 21 

 months after the planting was done. For reasons difficult to 

 determine, the plantation on the east slope was a total failure, 

 less than 5 per cent, surviving. The causes of this failure seem 

 to the writer to be due, first, to the less favorable climatic con- 

 ditions under which the young trees must struggle, and, second, 

 to the extremes of temperatures encountered at the time of 

 planting. 



The plantation on the west slope (except the incense cedar) 

 may be considered a success, about T3 per cent, surviving. The 

 results on the west slope based on an actual count on representa- 

 tive areas of 3,346 plants by rows, are shown in the following 

 table : 



COUNT REPRESENTATIVE OF 15,000 TREES PLANTED WEST SLOPE 

 SIERRA NEVADA MOUNTAINS 

 Species Character of Brush Aspect Age 



Sugar pine Open brush, few mature trees. . N, 



Yellow pine Open brush, few trees N,NW. 



Yellow pine Medium brush N,NW. 



Yellow pine Medium brush NW,W 



Yellow pine Dense brush S,SW. 



Yellow pine Dense brush W.SW. 



Yellow pine Open brush, scattered timber. . .W.NW. 



Total all pines 3346 



Since each brush density class covered approximately one-third 

 of the area, it is interesting to compare the same species and 



