Observations on the Girth-increase of Trees in 
the Royal Botanic Garden, Edinburgh. 
BY 
DAVID CHRISTISON, M.D. 
PART II.—CONIFER&. 
CONTENTS. 
PAGE 
INTRODUCTION, ... a ee ie ie “a 174 
I. Annual Results, ... =, ree sa A i 175 
A. General History of the species separately, bes esi 175 
B. Aggregate Annual Results, ... Ge i <a 183 
a. Comparison of the best single trees of ten species in 
two periods of five years each, ... ce tad 183 
6. Range of the Aggregate Annual Girth-increase, bse 184 
II. Monthly Results, ne te 187 
A. Average monthly Seaiige in the comparatively old 
Coniferz, 1882-86, 187 
1. Proportional percentage of the frst and iets half. 
season of growth, ny 188 
2. Progressive increase and decrease in oe growing 
season, 188 
3. Comparison ade ne Eas group of Pa same 
period, 188 
B. Average monthly a in the younger Coniferz, 
87-91 189 
I, Proportional percentage 0 of the frst and oad half. 
seasons of growth, 189 
[Notes, R.B.G., Edin., No. IV., 1901.] 
