TABLE OF CONTENTS. 



Synopsis of Orders 

 Larix Americana 

 Larix occidentalis 

 Larix Lyallix 

 PiCEA Mariana 



PiCEA RUBENS 



PicEA Canadensis 



PiCEA EnGELMANNI 

 PiCEA PaRRYANA 



Picea Breweriana 



PiCEA SiTCHENvSIS 



TsuGA Canadensis 



Plate dxciii, 



Page 

 Vll 



7 



Plate dxciv. . , 11 



Plate dxcv, 



15 



Plate dxcvi. 28 



Plate dxcvii 



33 



Plate dxcviii. . . . . . . . . . 37 



Plate dxcix 

 Plate dc. 



Plate dci 



43 

 47 

 51 



Plate dcii •55 



Plate dciii 



TsuGA Caroliniana Plate dclv, 



TsUGA HETEROPHYLLA . 



TsuGA Mertensiana 

 Pseudotsuga mucronata 

 pseudotsuga magrocarpa 

 Abies Fraseri 

 Abies balsamea 

 Abies lasiocarpa . 

 Abies grandis . ' . 



Plate dcv. 



63 

 69 

 73 



Plate dcvi 77 



Plate dcvii 



87 



Plate dcviii. . . . . . • . . .93 



Plate dcix. 



105 



Plate dcx 107 



Plate dcxi, 



113 



Plate dcxii .117 



Abies concolor 

 Abies amabilis 

 Abies venusta 



Plate dcxiii 



121 



Plate dcxiv . . .125 



Plates dcxv., dcxvi. . . . . , 



Abies nobilis Plate dcxvii- 



Abies magnifica 



Abies magnifica, var. Shastensis 



.... 133 



Plates dcxviii., dcxix. ...•••• 137 

 Plate dcxx 139 



