ILLUSTRATIONS 



LATB FACING PAGE 



Mimulus Lewisii Pursh. Red Mon- 

 key-Flower . . Frontispiece 



i Firms albicaulis Engelm. White Pine 24 



1 Pinus Murrayana Oreg. Com. Jack 



Pine . . . . , . . :,. 24 



2 Larix Lyallii Parl. LyalVs Larch .. 26 



2 Thuja plicata Don. Giant Cedar ,. 26 



3 Abies lasiocarpa (Hook) Nutt. Bal- 



sam Fir . . ... . * 28 



3 Pseudotsuga mucronata (Raf.) Sudw. 



Douglas Spruce .. ... . > 28 



4 Tsuga Mertensiana (Bong.) Carr. 



Mountain Hemlock . . :. 30 



4 Tsuga heterophylla (Raf.) Sarg. 



Hemlock '' ' . : '"'' :1 ".*'' *'^ . . 30 



5 Picea albertiana. S. Brown. Alberta 



Spruce . ./' . * : ^. . -* 32 



6 Zygadenus elegans Pursh. Tall Zy- 



gadenus 'v : t-v) i. ' -<^ --;- 38 



