CONTENTS XVU 



PAGE 



Remedies 269 



Control and Prevention of Losses 269 



Summary of Symptoms and Treatment of Stock Poisoned by Princi- 

 pal Toxic Plants 269 



Questions 270 



CHAPTER XIV 



POISONOUS AND MECHANICALLY INJURIOUS PLANTS OF 

 SECONDARY OR LOCAL IMPORTANCE 



Poisonous Plants 272 



MUkweeds (Asdepias) 272 



Oak (Quercus) 273 



"Laurels" (Ericaceae) 273 



Woody Aster (Xylonhiza Parryi) 275 



Colorado Rubberweed, or Pingue {Hymenoxys jioribunda) 276 



Western Sneeze weed (Helenium Hoopesii) 277 



Aconite (Aconitiim Columbianum) 279 



Wild or Choke Cherry {Primus demissa) 279 



Fern {Pteridium) 279 



Ergot {Claviceps purpurea) 281 



Fly Agaric, or Fly Amanita {Amanita muscaria) 283 



Death Cup, or Deadly Amanita {Amanita phalloides) 283 



Mechanically Injurious Plants 284 



Bromegrasses 286 



Barley and Squirreltail Grasses 286 



Needlegrasses 288 



Three-awn 288 



Gramagrass 289 



Questions 289 



Bibliography 289 



PART FOUR 

 PASTURE IMPROVEMENTS AND RESEARCH METHODS 



CHAPTER XV 



DEVELOPMENT OF WATERING PLACES FOR RANGE 

 AND PASTURE STOCK 



Availability of Water 295 



Water Requirements of Livestock 296 



Distribution of Water 296 



Natural Watering Places 298 



