TRANSACTIONS 
t OF THE 
ROYAL 
SCOTTISH ARBORICULTURAL SOCIETY. 
Lrevut.-CoLtonet F. BAILEY, F.B.S.E.. 
HONORARY EDITOR. 
A. D. RICHARDSON, 
ASSISTANT EDITOR. 
ROBERT GALLOWAY, SS.C., 
SECRETARY AND TREASURER. 
VOL" XX: 
id EDINBURGH: 
" PRINTED FOR THE SOCIETY. 
' SOLD BY DOUGLAS & FOULIS, CASTLE STREET. 
1907. 
