664 EXPERIMENT STATION RECORD. 



out. The distribution of the disease was as follows: Lungs, broucliial 

 and postpbaryn.Qeal glands, 90 per cent; udder and supermammary 

 glands, 73 per cent; and intestinal and mesenteric glands, 50 per cent. 



Of 786 Vermont cattle tested witb tuberculin by tbe station veteri- 

 narian, 138 were tuberculous. Omitting tbe station herd and one other 

 large herd in which live sixths of the animals were diseased, there 

 were 39 tuberculous animals out of a total of 662. The proportion of 

 tuberculous cattle in the State, however, is regarded as less than these 

 figures would seem to indicate, for the herds in which the tests were 

 made were those in which the presence of the disease was suspected. 



In ascertaining the normal temperature of the animals tested, it was 

 found convenient in some cases to determine this several days after the 

 injection of the tuberculin was made. 



The authors advise caution in the interpretation of tuberculin tests 

 made on a 2 year-old with her first calf, as the first gestation renders 

 the system highly susceptible to any excitement. 



"It has been claimed tliat animals suffering from actinomycosis may react to 

 tuberculin. From a practical standpoint, since lumpy jaw is coutagions and com- 

 municated to man, this makes little difference, yet it is not impossible that there 

 may have been tubercular lesions overlooked in these cases. One of us had 2 cases 

 of this kind. One cow with lumpy jaw gave no reaction whatever to tuberculin; 

 another, with both tuberculosis and lumpy jaw, gave the highest reaction (108. 6~^) 

 yet obtained." 



In over 1,000 cases injected there were found only 2 cases of non- 

 reacting tuberculous cattle. Old cows responded less readily than 

 other animals to the usual dose of tuberculin. In the author's experi- 

 ence no injurious effect has followed the use of tuberculin on healthy 

 animals. 



"It is already claimed that other materials will cause the same febrile reaction. 

 Taurin and kreatin (Merck's) have given good results iu the hands of Dr. W. L. Zuill, 

 of Philadoliihia, and E. Centauui claims that 'it has been proved that identically 

 the same action as that of tuberculin can be produced by the injection of the extracts 

 or other products of various bacteria, even such as are known to have no pathogenic 

 (disease-producing) properties.' . . . 



" The aggravation of the disease in tiiberculous animals is not a valid argument in 

 cases where such as react are promptly killed. No one who expects to keep his mild 

 cases should permit its use, for.it only makes a bad matter worse." 



The bulletin contains data relative to the attitude toward tuberculo- 

 sis of the boards having control of the live stock interests of Ontario, 

 Maine, i^ew Hampshire, Vermont, jMassachusetts, Rhode Island, Con- 

 necticut, New York, New Jersey, Pennsylvania, Maryland, Ohio, Indi- 

 ana, Illinois, Tennessee, Michigan, Minnesota, Kansas, Colorado, 

 Oregon, and Missouri. 



Hog cholera and swine plague, B. E. Salmon ( TJ. 8. Dept, Agr. 

 Farmers' Bui. x^4, pp. 15). — This bulletin, i»repared in the Bureau of 

 Animal Industry, treats of the symptoms, post-mortem api^earance, 

 causes, treatment, and sanitary measures for the prevention of hog 



