. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 125 Contribution from the Bureau of Plant Industry, Win. A. Taylor, Chief, and the Bureau of Animal Industry, A. D. Melvin, Chief Washington, D. C. PROFESSIONAL PAPER May 13,1915 ZYGADENUS, OR DEATH CAMAS By C. DWIGHT MARSH and A. B. CLAWSON, Physiologists and HADLEIGH MARSH, Veterinary Inspector CONTENTS Introduction 1 Description of Zygadenus 4 Common Names of Zygadenus ... 6 Poisonous Species of Zygadenus . 6 Losses of Live Stock by Zygadenus . 6 Animals Poisoned
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 125 Contribution from the Bureau of Plant Industry, Win. A. Taylor, Chief, and the Bureau of Animal Industry, A. D. Melvin, Chief Washington, D. C. PROFESSIONAL PAPER May 13,1915 ZYGADENUS, OR DEATH CAMAS By C. DWIGHT MARSH and A. B. CLAWSON, Physiologists and HADLEIGH MARSH, Veterinary Inspector CONTENTS Introduction 1 Description of Zygadenus 4 Common Names of Zygadenus ... 6 Poisonous Species of Zygadenus . 6 Losses of Live Stock by Zygadenus . 6 Animals Poisoned by Zygadenus ... 7 Symptoms Produced by Zygadenus Poisoning 7 General Statement of Experimental Work 8 Symptoms in Sheep Observed at the Greycliff Station 24 Symptoms in Horses and Cattle . 29 Autopsies 29 Toxic and Lethal Dose of Zygadenus Venenosus for Sheep 30 Experiments with Horses and Cattle . 34 Comparative Toxicity of Different Species of Zygadenus 35 Does Toxicity Vary with Locality . 35 Effect of Repeated Feeding in Produc- ing Immunity or Increased Suscepti- bility 37 Remedies ,, . . 37 Methods of Preventing Losses . . 43 General Summary 44 Literature Cited 45. WASHINGTON GOVERNMENT PRINTING OFFICE 1915. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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