10 



BULLETIN 210, U. S. DEPARTMENT OF AGRICULTURE. 



Table 4. — Classification of trees according to character of crown and presence or absence 

 of cones; number of cones and amount of seed produced by sample trees, and total seed 

 production on plot No. 4, Coeur d'Alene National Forest (area, 0. 9 acre). 



CROWN CLASSIFICATION OF TREES AND NUMBER BEARING CONES. 



Diameter breast high 



Number of trees, by crown class. 



Trees with 

 cones. 



Trees without 

 cones. 



(inches). 



Class 

 I. 



Class 

 II. 



Class 

 Ho. 



Class 

 III. 



Class 

 IIIo. 



Class 

 IV. 



Class 

 V. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



4to6 













4 

 7 

 1 



7 

 2 







11 

 15 

 15 

 9 

 5 

 4 

 1 



100 



7 to 8 











6 

 10 









9 to 10 









4 

 10 

 3 







100 



11 to 12 





1 

 4 

 9 

 5 

 3 

 1 



2 

 3 

 6 

 3 





4 

 5 



12 

 8 

 4 

 3 

 3 

 2 



30 

 50 

 75 

 89 

 100 

 100 

 100 

 100 



70 



13 to 14 











50 



15 to 16 





1 







25 



17 to 18 



1 

 1 

 2 

 2 

 2 







11 



19 to 20 













21 to 22 

















23 to 24 



1 















25 to 26 

































Total 



8 

 8 



100 



23 

 22 



91 



15 

 15 



73 



17 

 17 



6 



17 

 17 







12 



12 







9 

 9 







41 



41 



41 



60 

 59 



59 







Per cent of each 

 class with cones. . . 















NUMBER, OF CONES AND AMOUNT OF SEED PRODUCED BY SAMPLE TREES. 





Crown 

 class. 



Diameter. 



Age. 



Height. 



Cones open 

 or closed. 



Number of cones, by inch lengths. 



Tree No. 



5 to 6 

 inches. 



7 to 8 

 inches. 



9 to 10 

 inches. 



11 to 12 

 inches. 



Total. 





I........ 



II 



Ha 



III 



Ilia 



IV 



V 



Inches. 

 19.8 

 16.0 

 14.5 

 12.2 

 8.5 

 7.2 

 6.0 



Years. 

 107 

 84 

 92 



72 



80 

 72 

 83 



Feet. 

 127 

 108 

 100 



78 

 77 

 67 

 47 





2 



7 

 1 



19 



25 



3 



1 



17 

 1 

 6 



1 

 1 



39 







33 







11 







1 

























































Total CI trees'* . 



10 



48 



24 



2 



84 

















Tree No. 



Average 



length of 



cone. 



Total 



weight of 



cones. 



Total 



volume of 



cones. 



Weight of 

 clean seed. 



Number of 

 clean seed 

 per pound. 



Per cent 

 of germi- 

 nation. 



Per cent 

 germinating 

 in first 144 

 days of test. 



1 



Inches. 

 7.97 

 6.93 



8.45 

 8 



Pounds. 



6.0 



3.8 



1.9 



.1 



Bushels. 



0.295 



.215 



.102 



.008 



Grams. 



118. 901 



62. 773 



38. 667 



2.805 



23,840 

 29,840 

 21,771 

 21,920 



61 

 33 



37.5 

 90 



39 



1 



24 



1 



19 



1 



50 







1 

















1 

































Total (7 trees). 



7.6 



11.8 



.620 



223. 146 















