The cow had evidently been affected with tuberculosis, but the encysted mass of dead lung was a lesion which is not produced in this disease, but which is a frequent result of contagious pleuro-pneumonia. It seemed possible that this animal had both of the diseases at the same time, although the fact that pleuro-pneumonia was not known to exist in that part of the country made it appear very doubtful. Upon investigating the conditions of affairs at Mr. Clarke's farm, it was learned that his animals had suffered from a disease that had caused the death of several during the spring and summer. A cow which had been sold to C. P. Coggeshall and taken to the farm of Mr. John Boyd, of Elmhurst, was very sick, and a second cow bought by Mr. Boyd was also sick. Mr. Boyd's farm was visited on August 12. The cow called Cream Ecca, belonging to Mr. Coggeshall had died on July 20. The cow, Edith St. Hilaire, had improved very much during the two weeks previous to the visit and was then believed by her owner to be nearly well. An examination of the lungs of Cream Ecca showed them to be hepatized as in pleuro-pneumonia. These facts appeared sufficient to justify the diagnosis of contagious pleuro-pneumonia, but in the absence of any history beyond the Clarke herd, and considering the fact that the only cow of which a careful post-mortem examination had been made was certainly affected with tuberculosis, it seemed best to reserve a decision until more complete evidence had been obtained. On August 14, Mr. George B. Loring made a third visit to Elmherst Farm, and in the presence of Mr. J. H. Sanders, a member of the Treasury Cattle Commission, and Mr. Wadham, and Mr. Boyd, the two sick cows were slaughtered. An examination of the lungs of Edith St. Hilaire showed that she had every symptom of pleuro-pneumonia. The other cow, Dassie 4th, was likewise examined with the same indications of the disease. On August 15, Mr. Loring, the agricultural commissioner, went to Geneva, Illinois, and examined the conditions of the animals that were still on Mr. Clarke's farm. Mr. Clarke informed Mr. Loring that the first animal to show signs of the disease on his farm was the bull, Finis Lawrence, which became sick during the latter part of May and was killed in June. The cows, Ella Lawrence, Duchess of Broome County, Myrrhine, and Damask, all showed signs of sickness about the middle of June. Ella Lawrence was killed at the same time as the bull; Duchess of Broome County died; Myrrhine and Damask recovered and were on the farm at the time the examination was made. Tama Warren had also been killed, but Mr. Clarke insisted that this was because she was worthless as a breeder. Six animals in all had been killed or had died on Mr. Clarke's place since May. According to accounts received from other sources, it is probably that Tama Warren and Nutrina of Tunlaw were sick as early as April 6.