112 



TRANSACTIONS AND PROCEEDINGS OF THE [Sess. lv. 



By arranging the periods somewhat differently, equally 

 striking contrasts are obtained. Thus, in the six weeks from 

 4th July to 16th August, the percentage of girth -increase was 

 only 16, while that of top-shoot growth was 52. 



1889. — In this year the observations were resumed, but two 

 of the trees, Nos. 6 and 92, had to be given up, having been 

 made ineligible by transplantation. Unfortunately, I was 

 unable to make the observations at the same intervals as in 

 1888, so that the two sets are not strictly comparable. 

 Nevertheless, a remarkable resemblance comes out. (Table 

 IYb.) 



Table IYb. — Comparison of Height and Girth-Increase, 18.89. 



A. Height. 



-Alar. 26 



to 

 Ap. 15. 

 21 days. 



Ap. 16 



to 

 Ap. 29. 

 14 days. 



Ap. 30 May 14 



to I to 

 May J 3. June 3. 

 14 days. 21 days. 



June 4 June 30 July 16 



to I to I to 

 June 29. July 15. July 31. 

 26 days. 16 days. 10 days. 



Aug. 1 Sep. 1 



to to 



Aug. 31. Sep. 30. 

 31 days. 30 days. 



Total. 



No. 



8. Abies Lowiana, 

 91. Abies grandis, 

 26. Pinus Pinaster, 

 64. Araiicaria injbri- 

 cata, 



Total, 



Average rate per day 



Inches. 

 

 

 







Inches. 

 

 

 



0-50 



Inches. 











0-50 



V25 



Inches. 





 3-50 

 2-50 



1-50 



Inches. 

 5-00 

 6-25 

 9-50 



3-75 



0-50 

 •03 



1-7.5 

 •12 



7-50 

 •36 



24^50 

 •94 



Inches. 

 6^00 



2-25 

 4^00 



'•00 



14-25 



•89 



Inches. 



3^75 

 1-00 

 0^50 



0^50 



Inches. 

 1^00 

 0^'25 

 0^00 



2^25 



Inches. 

 

 

 







15^75 

 13-25 

 17^00 



5^75 

 •36 



57^75 



B. Girth. 



No. 



8. Abies Lowiana, 

 91. Abies grandis, 

 26. Pinus Pinaster, 

 64. Araucai-ia inibri- 

 cata. 



0-05 



0^05 







1^90 

 0^75 



Total 



I Average rate per day 



•10 

 •005 



Here we find the same difference in the duration of the 

 growing period of the girth and the top shoot as in 1888, the 

 former exceeding the latter by about two months. 



Dividing the growing season into three periods of two 

 months each, as before, it will be found that the figures for 

 the middle period are almost identical in the two years ; and 

 tlie chief difference is in the incidence of the small proportion 

 (23 per cent.) of top-shoot growth which falls to be divided 

 between the fir.st and third periods, about two-thirds of the 

 amount falling to the third period in 1888 and to the first 

 period in 1889. 



