18 BULLETIN 475, U. S. DEPARTMENT OF AGRICULTURE. 



NUMBER OF SEED PER POUND. 



In Table 4 is given by species the approximate number of seed per 

 pound. 



Table 4. — X umber of seed per pound. 1 



Species. 



Bigtree 



Increase cedar 



Western red cedar. 

 Arizona cypress . . . 



Douglas fir 



Amabilisfir 



Grand fir 



Noble fir 



Red fir 



Austrian pine 



Jack pine 



Jeffrey pine 



Lodgepole pine 



Number 

 of seed. 



Species. 



10, 



1", 

 400, 

 100, 



43, 

 9, 



28, 

 = 15, 

 2 67, 



24, 



150, 



3, 



120, 



000 

 000 

 000 

 000 

 000 

 300 

 900 

 400 

 000 

 000 

 i,(iM 

 100 

 000 



Maritime pine 



Mexican white pine 



Norway pine 



Scotch "pine 



Sugar pine 



Western white pine 



Western yellow pine: 



Pacific Coast 



New Mexico 



Black Hills 



White pine (New York). 



Engelmann spruce 



Sitka spruce 



Number 

 of seed. 



9, 450 

 2,700 

 54,000 

 69,000 

 2,400 

 28,000 



9,100 

 16,000 

 13,500 

 26,000 

 175,000 

 400,000 



1 The number may often be more or less by from 5 to 20 per cent than the figures given. 

 - Not Forest Service tests. 



SEED STORING. 



Wherever possible clean seed should be stored in air-tight recep- 

 tacles of glass or metal. Seed retains its vitality imder any condi- 

 tions of temperature and moisture much better in such receptacles 

 than in any others, except when placed in cold storage, which is 

 seldom available. Where neither of these methods of storage is 

 available the seed should be thoroughly dried and stored in a dry 

 and cool place. Some deterioration will take place under these con- 

 ditions, but ordinarily not sufficient within one year to be of serious 

 consequence. The storing of seed in cement cellars with the wings 

 attached has been found by Austrian experimenters to give better 

 results than storage with the wings removed. It is doubtful, how- 

 ever, whether the slight saving in vitality offsets the advantage of 

 handling and using clean seed. In every case the seed should be 

 thoroughly protected from rodents, by the use of poison, by being 

 stored in rodent-proof buildings, or by being hung in sacks out of 

 reach. 



SOWING AND PLANTING. 



STATUS OF THE WORK ON THE NATIONAL FORESTS. 



Dieect Seeding. 



Of the two methods of artificial reforestation, direct seeding and 

 the planting of seedlings, the former where it can be practiced suc- 

 cessfully offers the easiest and cheapest solution of the reforestation 

 problem. The seeding itself is a much simpler operation than plant- 

 ing, and with inexperienced labor, which is all that is generally ob- 

 tainable, it can be carried on in conformity with the most approved 



