SEEDING AND PLANTING 



The following table by Mason 1 shows the range in size 

 of lodgepole pine seed based upon the number of seeds per 

 pound. 



Date and locality. 



Number of 

 seeds per pound. 



1907. 



Targhee National Forest 83,000 



1910. 



Arapaho National Forest 76,000 



Bridger National Forest 96,000 



Hayden National Forest 112,000 



Holy Cross National Forest 105,000 



Bonneville National Forest 105,000 



Beartooth National Forest 94,400 



Madison National Forest 90,200 



1911. 



Arapaho National Forest 110,000 



Wyoming National Forest 76,632 



1912. 



Arapaho National Forest 95,254 



Leadville National Forest 103,900 



Medicine Bow National Forest 99,600 



Wyoming National Forest 72,000 



Rafn gives the following as the variations in the size of Norway 

 spruce seed from different localities. 



Locality. 



Purity. 



Weight in 



grams of 1000 



seeds. 



Norwegian northland seed. 



East Norwegian seed 



Swedish seed 



German seed 



4.01 

 5.57 

 5.48 

 9.01 



In the species investigated there appears to be a striking corre- 

 lation between the size of the seed and the average available 

 moisture in the surface soil at the time of and immediately 



1 Mason, D. T.: The lodgepole pine. Manuscript. 1913. 



