SYMPTOMS AND DIAGNOSIS 27 



which the disease has received its local name. In 

 the case of one animal which had been affected for 

 several months a condition of the bowel somewhat 

 resembling that present in Johne's disease was 

 discovered at the post-mortem examination. Acid- 

 fast bacilli, indistinguishable from those found in 

 Johne's disease, were also present in large numbers 

 under the microscope in a small area of the intes- 

 tine. This important lesion, however, which 

 seemed at first to throw an unexpected light upon 

 the cause of the disease, has not again been dis- 

 covered in a very restricted number of autopsies 

 which it has been possible to make on other affected 

 animals." 



In another report on the subject this extract is 

 quoted, and further details are given by the same 

 author. He wrote : 



"Since the above report was written further 

 material has been received for which the writer 

 has to thank Mr. Craik, M.R.C.V.S. The material 

 in question was sent from a farm upon which the 

 disease known as 'Scrapie' had not previously 

 appeared ; but the owner had, a year before, 

 bought sixty-five sheep from another farm on 

 which the disease had existed for several years. . . . 

 Twelve animals out of sixty-five had died with 

 similar symptoms to the one sent up for examina- 

 tion." 



Mr. Craik's report stated that the animals had started 

 to purge very severely during the last six weeks after 

 they had been put on roots, and that the disease seemed 

 to affect sheep in the same manner as Johne's disease 

 affects cattle. As the result of further inquiry it was 



