74 • EXPERIMENTAL FAR US. 



Ko. 33. Madame. — A grade cow, age 10 years; bought in 1893. Lungs slightly 

 diseased. Broncliial glands considerably affected ; mediastinal glands also slightly 

 tuberculous. 



No. 40. Saudie. — A grade cow, age 9 years; bought in 1893. One lobe of the 

 lungs was considerably diseased. Liver also diseased at tip of one lobe. The latter, 

 however, was not clearly tuberculous. The posterior mediastinal glands were much 

 enlarged and badly diseased. This cow had probably been affected for some years. 



No. 51. Queenie. — A grade heifer, age 1-|- year; bred at the Experimental Farm. 

 The peritoneum was very slightly affected with small pustules, which appeared to be 

 tuberculous. The disease was not clearly demonstrated in. this case. All the organs 

 and glands were carefully examined, but no tubercle was detected in any of them. 



No. 53. Lily Belle. — A Jersey heifer, age l^ year; bred at the Experimental 

 Farm. A small mass of tubercle was found in one of the lungs ; liver very slightly 

 affected. Small tuberculous patches were found distributed over the peritoneum. 



After the animals were all removed the barn was thoroughly disinfected as follows: 

 It was first well swept, scraped and cleaned, when the entire surface, including Moors, 

 walls, ceiling, stalls and other woodwork, was carefully sprayed with a solution of 

 corrosive sublimato (mercuric chloride) of the strength of 1 in 640, made by dissolving 

 half an ounce of coirosive sublimate, mixed with an equal weight of muriate of ammonia 

 (ammonium chloride) in 2 gallons (20 pounds) of water. Sulphur was next used — 

 burned in three iron pans placed on the floor in different parts of the building, with the 

 doors and windows all closed, and this fumigation was maintained for about 12 hours. 

 The day following, about 3 p.m., a second fumigation was begun with muriatic acid gas, 

 prepared as follows: Twelve open glazed earthenware dishes were procured, each 

 capable of holding about six pints, which were elevated on ordinary flour barrels equally 

 distributed throughout the building, and all openings carefully closed. In each of these 

 dishes was put 2^ pounds of common salt (sodium chloride) and on this was poured one 

 pint, fluid measure, of strong sulphuric acid. Muriatic acid gas was rapidly disengaged 

 from each generator, and in a short time the fumes were so dense as to saturate the air 

 in the barn with a thick cloud of vapour. Gas was cotistantly given off all night and 

 every nook and corner penetrated, and exhalations from the vessels had not ceased when 

 the building was opened the following morning. 



•Subsequently the walls and woodwork were swept, and a second spraying made 

 similar to the first with the corrosive sublimate solution. Tlien the floors, stalls and 

 passages were all thoroughly soaked witli the corrosive sublimate solution by means of 

 mops and afterwards scraped with sharp hoes, so as to remove all coating from the wood- 

 work, then mopped again with the corrosive sublimate solution freely used and subse- 

 quently allowed to dry. After this the walls, ceiling and stalls received three coats of 

 lime whitewash, when the cattle which were free from disease were returned to the barn. 

 Twenty-two steers were subsequently bought for feeding experiments. These were 

 isolated until tested with tub' rculine, but no reaction took place in any case, showing 

 that thoy were free from disease. These have since been placed in the barn with the 

 other cattle. 



The instructions sent to the branch expei-imental farms in the west to have the 

 tuberculine test applied to all the animals have since been carried out. 



EXPERIMENTAL FARM, BR.\NDON, MANITOBA. 



At this f irm the herd consisted of 20 animals, all of which were tested by Dr. Cox, 

 V.S., of Branilon, from 6th to 8th of December, and found free from disease. Twelve 

 steers, which were purchased for experimental feeding tests and kept isolated until the 

 tuberculine could be used, have also been tested and one of these reacted, the highest 

 temperature being two degrees above the highest normal. 



This animal was slaughtered and a careful examination made, but no evidence of 

 the disease was found. 



