142 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I40 



TTJ 2-7 (table 69) was cut off the tree January i, 1943. Here, 

 again, the intra-annuals become more diffuse and weaker outward on 

 the branch. 



1940 2 



1941 I 



I 



1942 I see 



I sL 



I see 



I mspce 



Table 70.— TTJ 2-9 

 74.5 cm. 57 cm. 



1940 I see I see 



I msce I sL 



1941 I see I see 



1942 I pee I pee 



I s are 



46 cm. 



I see 

 inc 



In TTJ 2-9 (table 70), cut off June 10, 1942, the intra-annuals 

 decrease in area outward on the branches. In contrast, a lens of 1942 

 in TTJ 2-10, cut off January i, 1943, becomes an entire growth layer 

 outward. 



1940 

 1941 



Table 71. — TTJ 2-12 

 46 cm. 35 cm. 



2 see 2 see 



I see 

 I dL 

 ddw 



I see 



33 cm. 

 2 see 

 I see 



22 cm. 



I see 



The lightwood of the outer growth layer of 1940 in TTJ 2-12 

 (table 71) varies from one to four cells in thickness. Its densewood 

 is thin and weak compared with that of the inner growth layer. As 

 in many other cases, the "outer thin" growth layer, although sharply 

 bordered, would not be given preference as an annual contact over 

 the inner growth layer if a choice were necessary. To consider the 

 two growth layers as separate annuals would be quite erroneous. 



The densewood of 194 1 at 46 cm. shows slight separation at two 

 places, the ddw. 



