Canadian Forestry Journal, May, ig^o. 



219 



NOTE. — This period was from 1892 to 1896. the trees in most cases then 

 being about five to seven years old. and planted three or four years pre- 

 vi(3usly. This is the age when trees make most rapid growth. 



Another Four Year Period of Growth 10 Years Later, Giving Average 

 Height in 1910. The Trees in 1910 Averaged about 22 Years Old. 



Name of Variety 



Average 

 Growth 

 Per year 



Greatest 

 Growth in 

 One year 



Smallest 

 Growth in 

 One year 



Average 

 Height 

 in 1910 



Sugar Maple . 

 Canoe Birch . 

 Yellow Birch . 

 American Elm 

 White Ash . . 

 Black Ash . . 

 Green Ash . . 

 Red Ash . ... 



inches 

 6 

 7 

 9 

 7 

 8 



17 



7 



12 



Comparing the two tables it is in- 

 teresting to note that the amount of 

 growth in the first of the two "four 

 year periods" was double or more 

 what it was in the second period. At 

 the end of the first period the annual 

 growth became less and less until it 

 reached an average annual growth of 

 about twelve inches. 



The kind of season has a great 

 deal to do with the amount of growth. 

 In some seasons a tree may grow 

 only a few inches, and the next year 

 its growth may be four or five times 

 greater. 



The soil has a most important* in- 

 fluence on rapidity of growth. Un- 

 fortunately the trees listed in these 

 tables are not grown in the same typ? 

 of soil, consequently the results in 

 some cases are apt to appear to con- 

 flict with the general statements. The 

 soil around the Experimental Farm 

 on which these trees were grown, 

 varies in character from a light sand 

 to a heavy clay, with several inter- 

 mediate types. 



On other i>arts of the Farm many 

 otlicr \arirlics of trees are growing 

 luulcr experimental conditions. While 

 very few are really suitable for street 

 ])lanting. a few shonld he mentioned 



inches 

 12-18 

 12-14 

 12 



23 

 23 



27 

 12 



14 



inches 

 2 

 no growth 

 4 



5 

 5 



ft. in. 



19 6 



36 3 



32 2 

 26 7 



33 4 

 30 2 



29 9 



33 9 



which can be highly recommended 

 for use around the home. 



(r) The fastest growing and of 

 large size : 



Laurel-leaved \\'illow (the best of 

 the Willows). 



Cut-leaved \\'hite Birch (in some 

 localities). 



Lombardy Poplar (for special ef- 

 fects). 



Black Walnut (in some cases). 



(2) ^Medium fast growing and 

 medium size : 



Pin Oak. 



Mountain Ash. 



Catalpa (not very hardy). 



Butternut. 



Purple-leaved Norway ]\Iaple. 



Flowering Crab Apples. 



Maiden-hair tree (suitable 

 streets, but rather slow growing). 



Kcntuckv Coffee Tree. 



of 



for 



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 fee promptly. 



The members are responding 

 splendidly to our new plan of a 

 Two-dollar Annual Fee, includ- 

 ing subscription to the Forestry 

 Journal. 



