Bui. 125, U. S. Dept. of Agriculture. 



PLATE IV 



FIQ. 1. SHEEP No. 160, SHOWING SALIVATION AND POSITION INDICATING 



NAUSEA. 



FIG. 2. SHEEP No. 192, SHOWING SALIVATION AND ATTITUDE INDICATING 

 NAUSEA AND GENERAL DISCOMFORT. 



