TRANSACTIONS 



OF THE 



ROYAL 

 SCOTTISH ARBORICULTURAL SOCIETY. 



A. W. BORTHAVICK, D.Sc, 



HONORARY EDITOR. 



EGBERT GALLOWAY, S.S.C, 



SECRETARY AND TREASURER. 



VOL. XXVII. 



EDINBURGH: 



PRINTED FOR THE SOCIETY. 



SOLD BY DOUGLAS i FOULIS, CASTLE STREET. 



1913. 



