LOUPING-ILL. 551 



No. 1. — A three-jear-old ewe was seized on the 18th May, just 

 before "iving birtli to a dead lamb. When seen on the 19th she 

 was standing with head erect and brilliant eye, the upper muscles 

 of the neck spasmodically contracted, causing the nose to be 

 protruded as in tetanus. When made to move, she did so very 

 stitHy and automatically, the limbs being lifted very high, and 

 the feet planted on the ground in a peculiar jerky manner, 

 like a horse with stringhalt. There were tonic or persistent 

 spasms of the muscles of the loins, back, and neck, and clonic 

 or intermitting and irregular spasms of the other muscles, parti- 

 cularly those of the limbs ; the breathing was very jerky, quick, 

 and irregular, being from fifty to sixty per minute when quiet ; 

 pulse 102, and temperature 105'5° F. 



On being excited the ewe fell prostrate on the belly and 

 chest, and lay with head and neck extended ; on being raised, 

 walked away trembling violently, the trembling being due to 

 alternate contraction and relaxation of the muscles. 



On examining the skin three kinds of ticks were found, but 

 they were not very numerous. 



She was killed, and on making a post mortem examination of 

 this ewe, nothing very special was discovered ; the flesh was 

 pale, and the carcase thin, but there seemed to be no abnor- 

 mality of the cord or spinal canal, beyond a slight increase of 

 the spinal fluid. There was no jelly-like exudate on the cord, 

 nor any congestion of the cord, or of the membranes. 



No. 2. — Another ewe was recovering. She had trembled for 

 a day, then became paralyzed, and went down and lay three 

 days, but was then up and walking about, but in an unsteady 

 semi-paralyzed manner. 



No. 3. — Ewe liogg ; had been ill four days ; was not observed 

 to tremble, but found down, paralyzed. Was in good con- 

 dition ; in fact almost fat. Lay quietly on the right side ; eyes 

 open, no dilatation of the x^i^q^ils, nor any squint. When sud- 

 denly approached, or' otherwise disturbed, was very frightened, 

 and struggled violently. When hind leg was lifted up and 

 allowed to fall there was no attempt at motion, but when 

 the fore leg was lifted in the same way there was a to-and-fro 

 motion before reaching the ground. 



When raised, and held up by hand, it could move its fore 

 limbs pretty freely, and could stand and bear weight upon them ; 



