TRANSACTIONS 



ROYAL 

 SCOTTISH ARBORICULTURAL SOCIETY. 



A. W. BOKTHWICK, D.Sc, 



HONORARY EDITOR. 



ROBERT GALLOWAY, S.S.C, 



SECRETARY AND TREASURER. 



VOL. XXX. 



EDINBURGH: 



PRINTED FOR THE SOCIETY. 



SOLD BY DOUGLAS Si FOULIS, CASTLE STREET. 



191G. 



