ON FOREST TIMBER. 591 
ver. By tlie foregoing method, I have seen the A loysia produce 
shoots of four and five feet long in the course of a summer, and each 
shoot ahiiost covered with their simple but delicate blossoms. As 
this Chilian exotic will not bear the severity of the British winter; 
by the end of September, the plants must be taken up, most of the 
soil shaken away, all the large, superfluous, and useless roots cut away, 
and the shoots cut to a couple of eyes, they must then be repotted in 
good sized pots in the same sort of soil as before recommended, and 
treated through the autumn and winter months as a greenhouse 
plant. 
The Aloysia citriodora makes a very agreeable variety among other 
plants trained against an arbour or a summer house. 
Sage. 
ARTICLE IX. 
ON CHANGING THE COLOUR OF THE FLOWERS OF THE 
HYDRA'NGEA HORTE'NSIS, 
Finding, on perusing "RusTicus," in page 11, and "M. G." in 
page 497, that causing the blossoms of the Hydrangea to change 
from pink (their original colour) to blue, is becoming the subject of 
discussion, I have taken up my pen to become a third person in 
the controversy, not to depreciate or undervalue the other methods, 
but to propose one of my own, which is simply this,-^ — instead of cul- 
tivating the plants in loam, (the common method) pot them in sandy 
peat, and water them once or twice a week with a solution of the same, 
which will be found, after a fair trial, to be equally as eflficient as any 
other method. 
Sage. 
ARBORICULTURE. 
ARTICLE X.— ON FOREST TIMBER.— By Dodona. 
" Quod homines tot seiifentite." 
It may be a question as to what kinds of trees are likely to be most 
profitable, when profit is the only object ? Much depends upon the 
nature of the soil. On dry lands, Larch gives the fairest prospects 
of profit, and what is of no little consequence, it has been found that 
