During the fall of 1958 a prominent sheep breeder in central Iowa began to lose some sheep. On October 12, 1958, a ram showed anorexia, and appeared as if he were in pain. Upon palpation, tenderness was noted on the right side of the abdomen, and central nervous system disturbances appeared prior to his death. When he became recumbent, he showed running movements and foamed at the mouth. A necropsy examination was not made.