305 
higher than the middle of the trunk. Several se are often 
found in a transverse section of yew wood. ew, how- 
ever, the condition is usually due to erect stems rece at the 
hase of the main trunk being overgrown pe the trunk, but now 
by the ro ugh ode of stones and pe their growing round and | 
ge: sto 
ether net actually benefit to any great extent from this 
alin intergrafting of roots or branches is rire for there 
can be no discrimination of stocks and scions which makes ropa- 
gation by grafting of such importance to the Herandlterst but 
that some local benefit may result is seen occasionally, more 
pada by a branch of a weak or unhealthy tree which has 
ecome united to a healthy tree, being more vigorous than the 
other branches. 
An interesting series of photographs, three of which are pub- 
lished with this article, has recently been received at Kew 
om Privarr C. C. PEMBERTON, of Victoria, British Columbia, 
now with the Canadian Army. They represent a series of 
circumstances of the cut surfaces of Doug las ” fir an bies 
wih? a short time. He noticed further that the roots of 
ane or dead stumps were rarely attached to the roots of a 
Ivin 
The phenomenon has been previously noticed and is referred 
to by Sorauer, Handbuch der Pflan zenkrankheiten, Berlin, 3rd 
e 1909, vol, 4 . 774. The views there expressed coincide 
largely with the; observations made by Mr. Pade barton. for the 
eory is favoured that the healed stumps obtain nourishment 
a res te a 
