210 WOOD AND FOREST. 



the following : Larch (Larix laricina), white spruce (Picea canaden- 

 sis), dwarf juniper (Juniperus communis), black willow (Salix 

 nigra), almond leaf willow (Salix amygdaloides), long leaf willow 

 (Salix fluviatilis) , aspen (Populus tremuloides) , balm of Gilead 

 (Populus balsamifera) , and hackberry (Celtis occidentalis) . 



THE DISTRIBUTION AND COMPOSITION OF NORTH AMERICAN FORESTS. 

 REFERENCES : * 



Sargent, Forest Trees. Intro, pp. Shaler, I, pp. 489-498. 



3-10. Fernow, For. Inves., pp. 45-51. 



Bruncken, pp. 5-16. Fernow, Economics, pp. 331-308. 

 Roth, First Book, pp. 209-212. 



*For general bibliography, see p. 4. 



