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portant of these is the sugar, or rock maple, a native of 

 eastern North America, and the principal tree yielding 

 maple sugar and syrup. The sap is usually collected from 

 late in February to early in April; trees from twenty to 

 thirty years old are considered the most productive, and a 

 tree will usually yield in a season from four to six pounds of 

 sugar, some giving less and others much more. This tree 

 is often planted for shade along streets and in parks, its 

 beautiful coloring in the fall enhancing its value for this 

 purpose. Its wood is largely used for making furniture, 

 in ship-building, for tool-handles and for shoe-lasts and 

 pegs. From the southeastern United States comes the 

 white-barked maple, also in the collection. Another tree 

 here is the red maple, ranging throughout eastern North 

 America; its wood is now used in large quantities for the 

 manufacture of furniture of various kinds, for gun-stocks, 

 etc. The striped, or goose-foot maple, sometimes known 

 also as moosewood, of northeastern North America, is a 

 pretty decorative species, especially attractive on account 

 of the beautiful marking of its bark. The box-elder, or 

 ash-leaved maple, native of eastern North America, rep- 

 resents another type with compound leaves. Three Old 

 World representatives are the common European maple, 

 of Europe and western Asia, the sycamore maple, from 

 Europe and the Orient, and the Norway maple, with a 

 number of varieties, also from Europe and the Orient. 

 The sycamore maple is a valuable timber tree in Europe; 

 its wood is used in the manufacture of musical instruments, 

 spoons and other household utensils. Farther north on this 

 ridge may be seen young trees of Koelreuteria, the varnish 

 tree, native of China. 



In the buckeye family, planted north of conservatory 

 range 2, is the common horse-chestnut (Aesculus) ; for a 

 long time the native country of this tree was unknown, 

 and its home was ascribed by different authors to various 

 lands; it has been pretty well established now that it is 

 indigenous to the mountains of Greece. Another tree here 



