283 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I40 



Con T i-j8 (1942) 



a. I gl + psg— 2 tfs— I year. 



b. I gl + psg — 2 tfs — I year. 



Here the second growth flush of 1942 merely added what we called 

 postseasonal growth which served not only to represent the second 

 flush but also served as a factor giving indefiniteness to the main 

 growth layer. 



The secondary leader of Con T i (Con T 1-4) came off the main 

 stem 11.4 cm. back from the position of the leader tip which stood 140 

 cm. above the soil level on December 1939. Total tip growth subse- 

 quent to 1939 and prior to the time of dissection, January 16, 1943, 

 amounted to 69.3 cm. Analyses, both on hand specimens and under 

 the microscope, are recorded on text figure 50. The tip growth of 

 1940 on both branch and trunk was multiple. In 1941 both tip and 

 diameter growth were multiple in branch and trunk, whereas in 1942 

 the same holds only in the trunk. 



The following summaries apply to the secondary leader and its chief 

 branches. 



Con T 1-4 (secondary leader) (2d 1941-1942) 



a. 3 sce^ — 3 tfs — li years. 



b. I see 4- 1 dee — 2 tfs — i year. 



c. I dee — I tf — i year. 



In sections b, farther out the leader than a, the margin between first 

 and second 1942 has become indefinite. At c, even the outer margin 

 of second 1942 has become less sharp. 



Con T 1-6 (1940-1942) 



a. 4 see 4- long arcs — 5 tfs — 3 years. 



b. 4 see + arcs — 4 tfs — 2^ years. 



c. 3 see — ^3 tfs — 2 years. 



d. 2 see — 2 tfs — li years. 



e. I see + s arcs — i tf — i year. 

 /. I see + s arcs — i tf — i year. 



In 1940, two tip flushes corresponded to one diameter flush, whereas 

 in 1941 two tip flushes corresponded to two diameter flushes, each one 

 indistinguishable from an annual increment. 



Con T 1-7 (1941-1942) 



a. 3 see + d arcs + psg — 3 tfs — 2 years. 



b. 2 see + d arcs — 2 tfs — li years. 



c. I see + 3 to 5 d arcs — i tf — i year. 



d. X see + 3 to 5 d arcs — i tf — i year. 



