l62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I40 



Branch XSC 1-2 (table 102) was frozen artificially at 107 cm. on 

 April 8, 1940, and was cut from the tree May 10, 1940. The varia- 

 tions along the branch are only too apparent — although they are ex- 



Table 102.— X^C 1-2 



107 cm. 89 cm. 



1932 2 see 2 see 



I psce 

 I sL 

 I msL 



1933 



2 see 2 see 



I psL 



1 s iL I s iL 



3 ddw 



1934 I see 2 see 



dL's 



I d arc 



1935 2 see 3 see 



2 sL I psL 



1936 I sec 4 see 



2 msec 



1937 



1938 

 1939 



1940 



I sL 5 sL 



treme, they seem to be typical of Arizona cypress at the extreme lower 

 forest border. Following are notes concerning the annual increments. 

 ip32, at 107 cm. — The inner sharp, complete, entire growth layer, 

 two-thirds to four-fifths of the entire increment, bears heavy com- 

 pression wood, thus contrasting sharply in color with the outer sharp, 



