9 2 TRANSACTIONS AND PROCEEDINGS OF THE [Sess. xxii. 



The E. radius measured 291 mm. 



„ X. „ „ 252 „ 



. „ W. „ „ 252 „ 



„ S. „ „ 215-5 „ 



The S. side of the tree was obscured by the hill and the 



trees above. 



The curve of girth shows slow growth up to 5 years, 

 rapid growth up to 20, and less rapid up to 85, after which 

 the gradient becomes less steep. 



The tree reached the age of IIG years, and its girth 

 measured 1588 mm., i.e. 5 feet 3i inches at the cambium. 

 D. Norway spruce (Picea excelsa, Link.) grew quite close 

 to C, but differed from all the preceding in being cut 12 

 feet above ground. Like C, its E. radius is greater than 

 any of the other three. 



The E. radius measured 298"5 mm. 



„ S. „ „ 159-0 „ 



„ W. „ „ 158-5 „ 



The girth curve sliows a good and fairly uniform growth 

 up to 50 years of age, but it must be remembered in this 

 case that, to allow for the 12 feet above the ground, we 

 must add 15 or more years to the age of the section to 

 obtain the actual age of the tree. 



In all probability it was planted at the same time as its 

 neighbour C, the Scots pine. 



According to our measurement the age of the section was 

 exactly 100 years, and its gh-tli of wood was 1314 mm., or 

 4 feet 4i inches. 



U. Scots pine {Pimis sijlvestris, L.) grew on the same 

 slope of Craig Choinnich as O and D, but some distance 

 to the W. of the latter, near the edge of the wood, and 

 almost opposite Braemar Castle. This change of position 

 removed the tree from the close shadow of tlie hill, and 

 opened up the S.W. and W. aspects. 



Like IJ, the tree was cut a few feet above the roots, but, 

 unfortunately, the exact height was not recorded. . 

 The S, radius measured 313-5 mm. 

 „ W. „ „ 25G-1 „ 



. .,..•■„ E. „ „ 248-0 „ 



„ N. „ „ 230-0 „ , 



