120 



Canadian Forestry Journal, March, i(}20 



growth. 'Ilic same is true of the l-'.lm, 

 although the Elm is mueh more suit- 

 al)le for a street tree. As a lawn tree 

 it is a great robber of soil food and 

 moisture and in this way frequently 

 injm-es adjoining vegetation. 



Recorded Measurements of Tree 



Growth. 

 Average yearly growths of trees 

 grown under lawn and avenue con- 

 ditions, from records kept at the Ex- 

 perimental Farm: 



American Elm ... .15 inches 



Silver Maple 14 " 



Cut-leaved Silver Maple 24 



Basswood 12 



White Oak 8 " 



White Ash 



2. Medium Sized Trees of Fairly 

 Rapid Growth : 

 The trees in this group are suitable 

 for streets of ordinary width, or for 

 use in home grounds, parks, j^ark- 

 ways, etc. 

 Sugar or Rock Mai)le (Acer saccha- 



runi) 

 Red Maple (Acer rubrum) 

 Norway Maple (Acer platanoides) 

 Red Oak (Quercus rubra) 

 White Birch (Betulus alba) 



Horse Chestnut (Aesculus Hippocas- 

 tamem) 



The fastest growing trees in tliis 

 group are the Birches and the 

 Mai)les. The Sugar Maple is the best 

 tree for general street planting in 

 localities with a temperature similar 

 to Montreal or Ottawa. The Red Oak 

 is the fastest growing of the oaks and 

 is a very fine street tree. It is greatly 

 ]irized in some American cities. At 

 Ottawa its rate of growth under fav- 

 ora1)le conditions is on a par with 

 that of the Norway Maple and some 

 specimens of the Sugar Maple. 

 Average Yearly Growths, Over a De- 

 finite Period, of Trees Grown under 

 Lawn and Avenue Conditions. 



Sugar Maple 6 inches 



Red Maple about 6 " 



Norway Maple 10 " 



Red Oak 14 " 



White Birch 8 " 



In the record above the small 

 amount of growth made by the Sugar 

 and Red Maples has an explanation. 

 Under other conditions these trees 

 would have shown double this 

 growth. 



(To be continued.) 



(fOMHISSIOH'OF CQNSEmmH 



Consequences of a forest fire in Central Quebec. 

 Photograph taken by Henry Sorgins immediately after the fire was extinguished. 



