No. 4.] CATTLE COMMISSIONERS. 509 



it occurs in the udder; but, considering the great infre- 

 quency of this disease in man, it does not seem probable 

 that milk can be a source through which it is communicated. 



Infectious Mammitis. 

 Early in June the following letter was received from a 

 farmer in Tj^igsborough, who had a similar trouble in the 

 summer of 1898 : — 



Ttnosborough, Mass., June 10, 1899. 

 Cattle Commissioners, Boston. 



I lost three cows last summer with some disorder of the bag ; 

 at present I have four that are taken the same way. I can't find 

 any one that knows anything about it. I would like some one 

 to come and see about it. Please come to-day. I have only nine 

 cows in all, and feel quite discouraged. 



Respectfully, Paul Kelley. 



The matter was referred to Dr. J. M. Parker, asking him 

 to act as an agent of the Board of Cattle Commissioners, and 

 he submitted the following report : — 



Haverhill, June 12, 1899. 



My Dear Doctor : — I went to-day to Paul Kelley's, Tyugs- 

 borough, and found he lived at Dunstable, about three miles from 

 Tyngsborough. He has nine cows in all ; four were in the barn. 

 No. 1 is a Holstein ; she comes in September 1, and has been 

 giving six or seven quarts of milk. She became sick June 9. 

 Her temperature is normal, 101|^°; breathing slightly hurried; 

 lame and stiff behind, so that she has difficulty in getting up ; 

 appetite poor ; salivates a good deal. The right hind quarter of 

 the udder is slightly swollen and red in color ; milk secretion 

 almost entirely suspended ; and from the affected quarter there is 

 a flow of watery fluid, containing floculi of lymph. 



Cow in stall No. 3 is also Holstein; comes in September 15; 

 has been giving about six quarts of milk ; has fair appetite ; tem- 

 perature 103° ; udder red, swollen, hard and sensitive ; milk 

 secretion practically stopped ; two hind quarters secrete watery 

 fluid ; taken sick about June 7. 



Cow in stall No. 5, Holstein, comes in about the end of Sep- 

 tember ; has been giving eight or nine quarts ; gives no milk ; 

 udder swollen, tender and red ; from two hind quarters secretes 

 watery fluid; temperature, 101°; breathing hurried, about 48; 

 eating fairly well ; taken sick about June 8. 



