Bui. 1274, U. S Department of Agriculture 
Plate IV 
Fig. I.— PiG 21 at li.44 A. M., Showing Nausea 
and Weakness 
Fig. 2— Pig 21 at I 1.45 A. M.. Showing Weak- 
ness, as Shown by Difficulty in Handling 
Its Legs 
Fig. 3 Pig 21 at 12.26 P. M., When Com- 
pletely Prostrated, Just Before Death 
