TRANSACTIONS 



OF THE 



EOYAL 

 SCOTTISH ARBORICULTURAL SOCIETY. 



A. W. BORTHWICK, D.Sc, 



HONORARY EDITOR. 



EGBERT GALLOWAY, S.S.C, 



SECRETARY AND TREASURER. 



VOL. XXXVII. 



E D I X B U R G H : 



PRINTED FOR THE SOCIETY. 



SOLD BY DOUGLAS d: FOULIS, CASTLE STREET. 



1923. 



LIBRARY NEW YORK BOTANICAL GARDEN 



