NO. I GROWTH LAYERS IN TREE BRANCHES — CLOCK ET AL. 233 



The inner see of 1943 has a margin as sharp as, or sharper than, 

 that of the outer see except on the short radius where, for 10° to 15°, 

 the outer contact of the inner see is shghtly less definite than that of 

 the outer see. Even then it is not sufficiently indefinite to estabhsh the 

 inner see as intraseasonal without other means of accurate dating. 



In sections h (14.3 cm.), the outer margins of the 3 see are equally 

 sharp. However, the densewood of the middle see is so slightly de- 

 veloped that it appears "thin" and less definite than the densewoods of 

 the other 2 see. 



In sections c (9 cm.), the outer contacts of 1943 and of the two 

 growth layers of 1944 are rather indefinite over an arc of about 90°. 



The psg of sections a is a mere hint of added growth ; of sections h 

 it consists of several incomplete lenses one cell thick ; and of sections c 

 it consists merely of discrete cells scattered around the circuit. 



Branch TTC 33-6 (table 163) was cut off July 31, 1944. 



Table 163.— TTC 33-6 

 18 cm. 13.3 cm. 6.5 cm. 



1942 I see I see 



I dee 



1943 I see I see I see 



I psce I msec 



1944 2 psce I msec i see 



I psee I msce 



I s arc 



inc inc inc L 



On the long radius, for an arc of 45°, the densewood of 1943 in 

 sections a (18 cm.) consists of a mere stringer made up of one or 

 two rows of narrow cells. Three different radii on sections at 18 cm, 

 give the following sequences with equivalent growth layers along the 

 horizontal directions (table 164). 



Table 164.— TTC 33-6 (18 cm.) 

 Radius 12 3 



1942 I see I see i see 



1943 I see I see i see 



I see I dee i dee (faint) 



1944 I psce I dee i see 



I psce I see i dee 



inc inc inc 



