NO. I GROWTH LAYERS IN TREE BRANCHES — CLOCK ET AL. l8l 



came from the outer, tip flush. Growth was taking place when the 

 branch was cut from the tree. 



Branch YCt i-6 (table 134) possessed two tip flushes for 1940. 

 Sections at 16.5 cm. came from the inner, and those at 13.5 cm. came 

 from the outer, tip flush. 



The measurements at the head of the table for YCt 2-2 (table 135) 

 are distances inward from the outer end of 1939 tip growth. This 

 holds for the remainder of the YCt's. All of them were cut from the 

 trees November 26, 1940, and were growing at the time. 



Branch YCt 2-3 (table 136) contained only the growth for 1939- 

 1940. A great disparity exists between the number of tip flushes and 

 the number of diameter flushes. 



The sections at 32 cm. of YCt 2-5 (table 137) were taken from the 



