July, 1920.3 



OGURA:— GROWTH IN THICKNESS. 



103 



latter, as the data in the table VIII shows (in this table relative 

 values are shown) (Art. Jap., p. (172), Table 16 1 ). 



Table VIII 



Badial diameter of tracheids in succeeding two years in Cryptomeria (No. VIII) 

 a, 240-th ring b, 241-st ring 





11 



14 



22 



23 



21 



22 



23.5 



20 



19.5 



19 



23 



20 



19 



a 



20 



19 



14 



12 



14 



10 



9 



7 



6 



6 



5 



5 







11 



15 



18 



18 



23 



23 



23 



20 



18 



17 



17 



22 



18 



b 



17 



15 



14 



14 



10 



7 



7 



6 



5 



5 



5 



4 



4 . 





4 



4 



4 



4 



4 



3.5 



3,5 



3 



3 











Table IX 



Average area in cross section of tracheids in Cryptomeria 



A (No. II) 



B 



(No. VIII) 



C (No. IX) 



X 



N 



A 



X 



N 



A 



X 



N 



A 



3 



-215 



584 



5 



280 



44S 



4 



228 



551 



23 



128 



982 



15 



230 



547 



20 



139 



917 



43 



100 



1257 



30 



202 



622 



40 



119 



1056 



63 



78 



1611 



45 



124 



1013 



60 



119 



1056 



83 



79 



1591 



60 



116 



1083 



80 



116 



1083 



103 



77 



1632 



80 



105 



1197 



100 



94 



1337 









100 



82 



1532 



120 



89 



1412 









125 



65 



1933 



140 



82 



1532 









150 



67 



1992 



160 



75 



1675 









175 



63 



2371 



180 



77 



1632 









200 



58 



2167 



193 



84 



1492 









225 



60 



2094 















2.30 



62 



2027 









1. Example 1 : a tree of three years' growth ; A, first ; B, second ; C, third 

 ring. Example 2 : No. V ; A, 89-th ; B, 90-tli ring. Example 3 : as table VIII. 



