io8 



PASTORAL AND AGRICULTURAL BOTANY 



early as two days after the onset of the preliminary symptons. Lasting 

 debility appears to be a common sequel of recovery. The mortality in 





FIG. 44. A pig in which the tremors due to eating white snakeroot have become 

 so violent that the animal has settled backward upon her haunches and is squealing. 

 (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 6, Fig. J.) 



FIG. 45. A pig which has assumed the resting posture from the position shown in 

 the preceding figure. (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 Caro- 

 lina Agricultural Experiment Station, Julv. 1918. Plate 7, Fig. K. 



men, who have had milk sickness, is approximately 24 per cent, for out of 

 320 reported cases, 77 persons died. No particular difficulty need be 



