DISEASES OF THE OX AND SHEEP. 298 



regard to the fact that the horn of the dog's toes was considerably worn, it was 

 inferred that the animal had travelled some distance, presumably in great measure 

 owing to his rabid state. Moreover, being a small terrier, he could not have 

 been accustomed to worry sheep, as, if he had displayed such propensities, he 

 would in all probability have been previously noticed and killed. Besides, his 

 enmity did not seem to extend so far as actually to try to kill the sheep. From 

 these considerations it was concluded that the dog had been afflicted with 

 rabies, and this diagnosis was afterwards proved to be correct by the fact that 

 on the l-lrth, loth, and 16th days after they had been attacked, the sheep (ewes 

 and lambs) were in some cases affected with rabies. Two flocks had been 

 submitted to this dog's bites on two successive days. Fourteen days after the 

 first flock was attacked, one ewe became restless, ate nothing, ran after the 

 other sheep, and butted at them. At first sight she appeared to be under the 

 influence of great sexual excitement, but the continued and determined manner in 

 which she charged at almost every sheep in turn, and the short time spent in the 

 attack in each case, seemed to indicate clearly that she suffered from some affec- 

 tion of the brain. She was isolated and then all these symptoms disappeared, and 

 a dull lethargy supervened. However, on putting her back with the other sheep, 

 she again pursued the same tactics. These symptoms lasted for two days. On 

 the third day tetanic spasms were manifested, together with frothing at the 

 mouth, intermittent inversion of the eye-lids, and occasional severe rigidity 

 of the whole muscular system. On the fourth day she was destroyed. Another 

 ewe became similarly affected on the loth day, and two more and several lambs 

 on the IGth day. Out of the first flock, six ewes and four lambs were bitten, 

 and of these, five ewes and all the lambs were either killed or died. In all cases 

 out of the first flock, the affected sheep showed symptoms similar to those of the 

 first ewe above mentioned; but in most instances the tetanic spasms appeared 

 earlier, and generally on the second day. 



In the case of the second flock, the ewes and lambs which were bitten were 

 twelve in number. Of these, one ewe and two lambs died on the third day. 

 These three deaths, however, were attributed to the extensive lacerations of the 

 head which they had sustained. On the loth day one ewe was affected with rabies, 

 and only a second case occurred, which was on the 16th. The immunity from rabies 

 which this second flock showed was peculiar. The two flocks were a mile and 

 a half apart. The first was attacked late in the afternoon, the second (very 

 evidently ) early on the next morning. At any rate they were found at 6 a.m. 

 in a distressed and frightened condition, while the dog was only half a mile 

 distant from them. It may have been possible that the second flock was not 

 inoculated with virus of sufficient quality or quantity to have produced rabies, or 

 the first flock may have exhausted the supply. 



If an examination be made after death has occurred in the 

 case of a sheep, it may he evident that there has been some 

 inflammation of the membranes of the brain, together with 

 slight congestion of its substance. The upper part of the wind- 

 pipe of the sheep is not always inflamed, as it so generally is in 

 the case of the dog. The chief signs which are diagnostic of 

 the disease are that the rumen is partially filled with dirt and 

 filth, sticks, and stones, a very fetid smell being perceptible, and 

 the inner lining of the paunch being much inflamed, not con- 



