4 ILLUSTRATIONS. 



Page. 

 FIG. 12. Three western Montana trees near Flathead Lake. Left, Western 



Larch ; center, Douglas Spruce ; right, Lodgepole Pine 26 



13. Western Larch, in the Flathead Valley 28 



14. Lyall's Larch, on Mount Lolo. Trees a foot or less in diameter; 



about 8,000 feet altitude. August 30 



15. Western Larch. A, Branch two years old; B, cone; C, a young 



seed-bearing scale and bract. About two-thirds natural size 31 



16. Englemann Spruce, in Glacier National Park. Scene on creek bot- 



tom in August 32 



17. Englemann Spruce, in the upper Bitter Root Valley, Montana .">l 



18. Englemann Spruce. A, JVlature cone; B, leaf; C, seed; D, portion 



of twig; about natural size 35 



19. Western Hemlock, in Glacier National Park 30 



20. Western Hemlock. A, Twig and cone; B, seed-bearing scale; 



slightly enlarged 37 



21. Mountain, or Black Hemlock, in the St. Joe Mountains of northern 



Idaho ; on the extreme left an Alpine Fir 38 



22. Mountain Hemlock, about 4 feet in diameter 40 



23. Top of a young Douglas Spruce 41 



24. Grand Fir, typical form ' 42 



25. ^Douglas Spruce. A, Cone; B, leaf; C, bract and lower side of 



seed-bearing scale; D, seed 43 



26. Grand Fir. In young trees the bark is smooth, but it grows 



rougher w T ith age : 44 



27. Grand Fir. A, Twig and cone in natural position; B, bract and 



lower side of seed-bearing scale ; C, seed 45 



28. Branch of Grand Fir. Condition in July 46 



29. Alpine Fir. A, Twig and cones in natural position; B, bract, nt 



a, and lower side of seed-bearing scale ; C, upper side of seed- 

 bearing scale with seeds in position . 47 



30. Alpine Fir, in Glacier National Park .__ 48 



31. Alpine Fir. The smooth bark is characteristic, even to maturity 50 



32. Arbor Vitae. A, Twig and cone; scalelike leaves; B, scale; C, 



seed 51 



33. Arbor Vitae. Scene in St. Joe Mountains in Idaho 52 



34. Junipers. Left, Rocky Mountain Juniper, with immature cones 



at A and mature ones at B. Leaves scalelike. Right, Dwarf 

 Juniper, twig and fruit; D, seed; C, fruit (cone) in section, 

 showing two seeds 53 



35. Rocky Mountain Juniper, on Flathead Lake 54 



36. Dwarf Juniper, in Glacier National Park__ 56 



37. Western Yew. Branches showing fruits in various stages of 



development. July 57 



