REPRODUCTION OF WESTERN YELLOW PINE. 



protected would become fairly well restocked. Table 2 shows how 

 this process has worked on plots 3a and 3b, which are typical of 

 extensive areas on which reproduction is lacking. 



Table 1. — Record of seedlings 1 foot or more in height. 

 [All seedlings counted on entire area.] 



Plot. 



Year 

 estab- 

 lished. 



Year 

 logged. 



Area 

 acres. 



Number of seedlings. 



Number 



per acre, 



1919. 



1909 



1914 



1919 



3a 

 3b 



4a 

 4b 



1909 

 1909 

 1910 

 1910 



1909 

 1909 

 1909 

 1909 



12 

 12 



8 

 8 



5 







18 



57 



30 

 15 

 33 



179 



333 

 375 

 68 

 204 



27.75 



31.25 



8.5 



25.5 



Table 2. — Number of seedlings- by age classes, exclusive of 1919. 

 [Based upon 8 plots of 0.1 acre each within plots 3a and 3b .] 



Year of origin. 



Age in 

 years, 

 '1919. 



Number 



of 

 seedlings. 



Percent- 

 age of 

 total. 



1908-9 



11-12 

 10 

 8 

 6 

 4 

 3 



1 



10 

 28 

 80 

 76 

 18 



0.5 



1910 



4.7 



1912 (or 1913) 



13.2 



1914 



37.5 



1916 



35.7 



1917 



8.4 







Total 





213 



100.0 









Table 3. — Establishment of seedlings. 



[Total number of seedlings by age classes.] 





Num- 

 ber 

 of 5 



by-10 

 foot 



plots. 



1909 



1914 



1915 



1916 



Plot. 



lyr. 



2-5 Over 



yrs. 5 yrs. 



lyr. 



2-5 

 yrs. 



Over 



5 yrs. 



lyr. 



2-5 

 yrs. 



Over 



5 yrs. 



lyr. 



2-5 

 yrs. 



Over 



5 yrs. 



lA 



8 

 10 

 7 

 7 

 10 

 10 

 8 

 8 





 

 

 

 

 

 

 



3 

 3 

 

 

 1 

 

 1 

 







1 





 

 

 

 

 



2 

 6 

 5 

 1 

 34 

 43 

 

 



2 

 7 

 5 

 16 

 

 1 

 

 



2 

 1 

 

 

 

 

 

 





 

 

 1 

 

 

 

 



4 



10 

 6 

 17 

 3 

 9 

 

 



2 

 1 

 

 

 

 

 

 



i 1 



120 



16 



18 



> 



10 











2 

 6 

 4 

 11 

 2 

 4 

 

 



3 



IB.. . 



1 

 

 

 

 

 

 



2a . . . . 



2b.. . 



3a 



3B 



4a 



4B 







Num- 

 ber 

 of 5 



by 10 

 foot 



plots. 



1917 



1919 



1920 



Plot. 



iyr. 



2-5 

 yrs. 



Over 

 5 yrs. 



lyr. 



2-5 



yrs. 



Over 

 5 yrs. 



lyr. 



2-5 

 yrs. 



Over 

 5 yrs. 



lA 



8 

 10 

 7 





 

 3 



17 

 21 

 5 

 15 

 1 

 2 

 

 



3 

 1 

 

 

 

 

 

 



144 



988 



34 



22 



1,275 



998 



3 



17 



13 

 9 

 6 



11 

 1 

 

 

 



3 

 1 

 3 

 3 

 

 2 

 

 



DOOOOOOO 



99 

 150 

 39 

 22 

 217 

 131 

 



1 



10 



IB 





2a 



3 



2b 



7 





3a 



10 

 10 

 8 

 8 





 

 

 



o 



3b 



2 



4a 





 



4B 









1 Counts made August, 1917. Some seeds apparently germinated after this count. 



