176 



ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



white-pine region of northern Idaho and wester^ Montana, in the 

 white-pine and red-pine region in the Lake States, and in the yellow- 

 pine and Douglas-fir region in the Rocky Mountains. Work was also 

 continued in the sandhill region in Nebraska and on a number of 

 watersheds from which municipal supplies of water are drawn. 



The average costs of planting and sowing reflect the higher cost of 

 labor and supplies. The average planting cost was $12.13 per acre, 

 as against $10.62 in 1916, and the average cost of sowing $4.69 as 

 against $4.45. 



The acreage planted and sowed is shown by States in Table 6. 



Table 6. — Planting and sowing on National Forests, by Fitatcs, 19J7. 



Table 7 gives the nurseries maintained by the Service, with their 

 locations and the amount of stock on hand July 1, 1917. The stock 

 on hand is approximately the same as in 1916. 



Table 7. — National Forest nurseries and stock on hand. 



The large amount of seed collected in 1915 made it unnecessary 

 to collect or purchase more than a small quantity in the fall of 

 1916, when the seed crop was poor on most of the National Forests. 

 The amount collected and purchased and its cost is shown in Table 8, 



