Plate 28 



Fig. I. XSC 9-1-C. Section 10 cm. outward on branch from plate 2j. Xylem of 

 1939-1941. Intra-annual dee of 1940 which is psce 10 cm. inward and msce 

 25 cm. inward on branch ; sharpening of contacts inward on branch ; growth 

 rhythms. 



1939: see witii indefinite margin; cell columns doubly bent. 

 1940: Multiple bands of dw ; dee which is psce on plate 27 (partially or 



wholly diffuse intra-annual of 1940 unusual in other branches of 



this tree and in other trees ) ; dL rather faint — may be the sL on 



plate 27 ; see. 

 1941 : dee and parenchyma circle ; inc. 

 Fig. 2. XSC 70-5-a. Branch section of Cuprcssns arizonica, cut May 9, 1941. 

 Xylem of 1938-1941. Dated multiplicity; contrast of "outer thin" gls of 1939 

 and 1940; growth to May 9. 

 1938 : see with irregular margin. 

 1939: Possible frost injury; parenchyma circle with dw ; bands of diffuse 



dw ; 2 see, outer (annual ) dw the heavier. 

 1940: dee; bands of diffuse dw ; see, with ddw ; "cmter thin" see actually 



long lens because of a branch. Inner dw (intra-annual) heavier 



than the outer (annual). 

 1941 : inc. 



