250 



TEAXSACTIONS AND PROCEEDINGS OF THE [Sess. lxiv. 



coming next. "Whereas in the five-year period their chief 

 growth was in October, September again ranking next ; 

 and their least growtli in July, December being a month 

 of good growth, and March just over an average month. 



In the two groups of deciduous trees, November shows 

 most growth in the nine-year period ; while, in the five- 

 year period, December shows most, January coming next. 

 In both periods, May shows a decrease of girth in all 

 deciduous trees measured. 



Dividing the year into growing and sleeping halves, we 

 obtain the following comparisons of percentages of growth, 

 the first and second periods agreeing fairly well : — 



(3 Evei-<ri'eons 

 7 Deciduous 

 o Deciduous 



Growing Season. 

 1st Perio<l. 2nd Period. 



(31 51-5 



1)1 91-2 



88i 94-2 



Sleeping Season. 



1st Period. 2ud Period. 



39 48-5 



9 8-8 



lU 5-8 



2Wi 



236-9 



59 1 



(33-1 



Table V. shows the girth of cacli individual tree on 12th 

 January 1890 and 12th January 1899, the increase of each 

 tree, the average annual increase for nine years and also for 

 five years, all in millimetres. 



Table V. — Girth of Trees, and Increase in Nine Years. 



