NO. I GROWTH LAYERS IN TREE BRANCHES — CLOCK ET AL. 21 5 



The second column (a) of table 157 carries the total number of 

 branches taken from a tree. The third column (b) carries the sum of 

 all years in all branches. The fourth and fifth columns (c and d) give 

 the percentage of branch-years with single diameter flushes and those 



Table 152. — XSC 12 

 12- I 12-2 12-3 



1937 a. I see a. I see a. i see + i sL 



+ I d arc 



b. I see b. I see b. i see + i sL 



-{-id arc 



c. I see c. I see c. 2 see -f- i d are 



-{- ddw 

 d. I see 



1938 a. 3 see -f I dL -f- dw a. i see -|- i msec a. i see 4- i dee 



-|- I psce -1- 2 sL -f I sL 



b. 3 see -f- I dL b. i see -\- 1 msec b. i see -|- i dee 



-1- I psce -f 2 sL -f I sL 



c. I see c. I see -f i msec c. i see -{- i dee 



-\- 1 psce -f 2 sL -f I msce 



d. I see + 2 dee 

 -f I msL -f- ddw 



1939 a. 2 see -[- I dL a. 2 see -|- i dL a. i psce 



-f ddw -|- ddw -f- arcs 



b. 2 see -}- I dL b. 2 see -f- i dL b. i psce 

 -(- ddw -|- ddw -f- arcs 



c. 2 see -}- I sL c. 2 see -|- i dL c. i psce 

 -|- I dL -f ddw -|- ares 



d. 2 see -f- 1 sL d. 2 see + i dL 

 -f- I dL -f- arcs 



1940 a. I see -)- I sL a. 2 see -|- i sL a. i psce 



-f I msce -|- I d -tL -1- ddw 



b. I see + I sL b. 2 see -|- i sL b. i psce -f i dL 

 -|- I msce -f- I d 4L -f ddw 



c. I see -[- I msL c. 2 see -f i sL c. i psce 

 -|- I d iL -f I psce -|- ddw 



d. I see -{- I dee d. 2 see -f- i sL 

 -f- I psL -i- I d ^L -f ddw 



with multiple flushes. The sixth column (e) gives the percentage of 

 branches agreeing with each other in each tree and is obtained by 

 taking the difference between the values of (c) and (d). Here, too, 

 the range of agreement attains a maximum, zero to 100 percent. In 

 those cases where agreement among the branches of a tree is extreme, 

 either zero or 100 percent, the number of branches from any one tree 



