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PASTORAL AND AGRICULTURAL BOTANY 



followed by slight, intermittent tetanic contractions. At this stage of 

 trembling, ataxia is pronounced and the animal is unable to stand. It 

 drops to the ground with its head and neck outstretched and jaw close to 

 the ground (Fig. 43). Trembling is repeated every time the animal is 

 made to rise. The animal becomes comatose after the second or third 

 day and may lie prostrate on its side until death occurs. The symptoms 

 of trembles in hogs are in general like those in sheep (Figs. 44 and 45). 



FIG. 41. Ewe 161 in a characteristic posture when the tremors following the eat- 

 ing of white snakeroot (Eupatorium urticafolium) have become acute. The animal 

 has spread its feet apart to remain standing. (After Wolf, F. A., Curtis, R. S. and 

 Kaupp, B. F.: A Monograph on Trembles or Milk Sickness and White Snakeroot. 

 Technical Bulletin 15, North Carolina Agricultural Experiment Station, July, 1918, Plate 

 2, Fig. B.) 



The onset of milk sickness in man is gradual, and after a day or two of 

 weakness and debility accompanied by loss of appetite, the patient is 

 seized with epigastric distress. Violent vomiting follows, associated with 

 obstinate constipation with great thirst. Abdominal pain is noteworthy 

 and muscular tremors are generally present. The foul odor of the breath 

 is characteristic. The tongue is swollen. Respiration is normal, but the 

 temperatures is subnormal (97 to 98). Severe cases show typhoid 

 symptoms with delirium. Coma precedes death, which may come as 



