280 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I40 



trunk. All carry the same general features in the trunk as they do in 

 the branches, insofar as they have been dissected. 



The trees transplanted November i6, 1939, from the Texas Agri- 

 cultural Experiment Substation to the Conservatory were placed there 

 under conditions which reinitiated growth and caused the formation of 

 a so-called Conservatory growth layer. The loblolly pine, Con T i, as 

 well as all other "Con" trees, was moved to the grounds of a residence 

 on April 24, 1940 ; it was observed and measured from the time of its 

 receipt, November 16, 1939, until it was dissected January 16, 1943. 

 At the end of 1939, the tip of the leader (known later as Con T 1-5) 

 stood 140 cm. above the ground and growth added thereto by January 

 1943 totaled 79.3 cm. The analysis of the main stem and all but two 

 of its branches is shown on text figvire 49. Tip growth of 1940 (three 

 tip flushes) and 1942 (two tip flushes) was multiple as shown by 

 measurements and by terminal bud scale scars. Diameter growth was 

 equally multiple, even showing two distinct growth layers in the main 

 trunk for 1940 in hand specimens (labeled in capitals on the figure). 

 Hence it is clear that multiplicity makes little or no distinction between 

 branch and trunk. 



The following analyses apply to the leader and its chief branches. 



Con T 1-5 {leader) (1^41-1942) 



a. 2 see + I dee + d gis + d arcs — 3 tfs — 2 years. 



b. 2 see -}- dee's — ^3 tfs — 2 years. 



c. I see + I dee — 2 tfs — i year. 



d. I see — I tf — 2 year. 



The inner margin of the growth layer for second 1942 was indefinite 

 back from its own tip flush. 



Con T i-ii (1Q40-1942) 



a. 4 see + L's + arcs — 4 tfs — s years. 



b. 3 see — 3 tfs — 2^ years. 



c. 2 see — 2 tfs — 2 years. 



d. I see — I tf — I year. 



e. I see — I tf — I year. 



Here the diameter increment for each tip flush is sharply bordered, 

 regardless of its annual nature. The above analysis for Con T i-ii 

 is duplicated in Con T 1-12, 1-13, and 1-14. 



