Mi TRANSACTIONS OF ROYAL SCOTTISH ARBOBICTJLTUBAL SOCIETY. 



Abstract of Meteorological Observations recorded at Sixty-seven 



Stations of the Scottish Meteorological Society during the 

 Year ending with September 30, 1900. 



'2. The following Correspondence has been communicated by 

 Professor Bayley Balfour, Hon. Botanist to the Society. 



The "Black" and the "Ontario" Poplars. 



In reply to a letter received from Mr D. F. Power, Forester, 

 Fetternear, Aberdeenshire, the Professor wrote as follows : — 



Royal Botanic Garden, 



Edinburgh, 1th May 1900. 



Dear Sir, — I have received from the Secretary of the Royal 

 Arboricultural Society your question, namely, ' ; Is the old Black 

 Poplar, which is mentioned in the old gardening books, and which 

 is supposed to be a native of this country, the same as the Ontario 

 Poplar?" 



The Black Poplar, Populus 'nigra, Linn., is an altogether 



