226 APPENDIX. 



Salix purpurea, L. Purple Willow, six to fifteen feet. Best of 

 hedge and osier willows. Correspond with United States 

 Department of Agriculture concerning. 



Salix ludda, Muhl. Shining Willow, five to ten feet. One of 

 the most beautiful willows for ornamental planting. 



Salix fragilis, L. Brittle Willow, Crack Willow, Bedford Wil- 

 low, sixty to eighty feet, affords best willow timber, and 

 contains large per cent, of tannin, and more salicin than 

 others. 



Salix alba, L., vars. Salix cseruea and Salix Vitellina, Blue 

 Willow, and Golden Willow. Particularly useful as os- 

 sier or basket-making willows. 



Populus nigra, Black Poplar, thirty to forty feet, of rapid 

 growth, wood valuable for flooring, cooperage, and for 

 gunpowder charcoal. 



Populus tremuloides, MX. American Aspen, " Quaking Asp," 

 twenty to fifty feet. 



Populus nigra, var. dilatata, Lombardy Poplar, tall, spire- 

 shaped tree, of rapid growth, to be set in rows for wind- 

 breaks. 



Populus monilifera, Ait. Necklace Poplar, large tree, one 

 hundred and fifty feet high, light, soft wood, useful for 

 box manufacture, and especially for paper pulp. 



Juniperus Virginiana, L. North American Red Cedar, or Pencil 

 Cedar. The largest of American junipers, sixty to ninety 

 feet, furnishes a light, fragrant, and imperishable wood. 



Abies concolor, Small Balsam Fir, or White Fir, eighty to one 

 hundred feet. 



Abies nobilis, 



Abies magnifica, 



' m > \EedFir. 

 gmfica, J 



