LIST OF ILIA' ST RATIONS XXI 



FIG. PAGE 



52. A Favorable Condition for Burning Piled Brush. 



Missoula National Forest, Montana 259 



53. A Spruce Top Improperly Lopped 263 



54. The Same Spruce Top Properly Lopped 263 



55. A Well-Developed System of Roads and Trails, Used 



for Transportation and Fire Protection. Black 

 Forest, Germany 269 



56. A Plowed Furrow that Stopped a Surface Fire 274 



57. A Fully Cleared Fire-Line in the San Gabriel Moun- 



tains, California 274 



58. A Fire-Line in the Chaparral. Angeles National 



Forest, California 279 



59. A Mountain 'Frail Built for Fire Patrol. Angeles 



National Forest, California 283 



60. Location of Fire-Lines in the Angeles National For- 



est, California 283 



61. A Lookout Station. Cabinet National Forest, Mon- 



tana 287 



62. A Watch Tower in the Tusayan National Forest, 



Arizona 295 



63. Fighting a Ground Fire by Trenching -?()-+ 



