STAGGER GRASS. AS A POISONOUS PLANT. 9 



horns caused her to fall over, and she would then not get up volun- 

 tarily, but if helped up would remain standing. The sheep was re- 

 ported as having been very sick during the night. This condition 

 cf weakness continued during the day. On March 27 she was much 

 better but still weak, and was eating nothing, but on March 28 she 

 had practically recovered, and was in a normal condition. 



April 3 the sheep, which had entirely recovered from the previous 

 feeding, after having been deprived of food for 24 hours, was fed 



Fig. 6.— Sheep No. 228 at 9.35 a. m., April 6, 1914. 



between 10.50 and 11.10 a. m. 100 grams of leaves of the Chrosperma. 

 This material was from the same collection as that used in the earlier 

 experiments ; it had been kept in cold storage and was in good condi- 

 tion. In this case the plant was fed by placing it, after it was cut 

 up, directly into the back of the sheep's mouth, thus forcing the 

 animal to swallow it, as she would not do so voluntarily. At 11.10 

 a. m. she was distinctly nauseated, and this condition continued 

 marked for perhaps an hour, when the sheep seemed to be better, but 

 was sleepy and listless. No marked symptoms were noticed until 

 about 3 p. m., when vomiting commenced. 



April 4, 9.30 a. m., the animal, lying down and apparently resting 

 easily, was made to get up and walk about, when she showed that 

 she was very weak, for she staggered when walking, and groaned. 

 Figure 4 shows quite clearly an attitude indicating great weakness. 

 As it was deemed best to carry the experiment farther, 50 grams of 

 leaves, fed in the same way as before, were given between 10.50 and 



