ELEVENTH ANNUAL YEAR BOOK— PART X 



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The herd at the State Sanatorium for the treatment of tubercu- 

 losis ;ii Oakdale, was examined in .July, 1900. The herd consisted 

 of fifty-three head, of which nine reacted to the test and two were 

 held as suspicious; the former year there being but one reactor in 

 the herd which then numbered thirty-three head. Shortly prior 

 to the test in July, 1909, a herd of twenty-five Ilolsteins had been 

 purchased in Illinois, and the nine reactors were all from this herd. 

 The two suspects had associated with this herd and were evidently 

 infected directly from this source. Another test was made in 

 November, 1909, and again in May, 1910, there being no reactors 

 or suspects found on either of these tests, and it is hoped the herd 

 will remain healthy. 



The nine reactors and two suspects were slaughtered and found 

 to be in the conditions disclosed by accompanying post mortert* 

 record. 



FINAL POST-MORTEM EXAMINATIONS. 



OAKDALE HERD, IOWA CITY, JULY 21, 1909. 



*Tank. 

 tSuspeot. 

 JSuperficial. 

 § Large abscess. 



The test at the Industrial School at Eldora in May, 1909, dis- 

 closed the fact that out of the herd of eighty-two animals four 

 reacted. An examination in the previous year, when the herd 

 numbered sixty-three, showed no reactors. The attached post 

 mortem record shows the extent of the disease in the four cases 

 which were found at the institution. The four cases in question 

 were found in a herd of Holsteins which had been purchased in 

 Illinois previous to the test. This shows the danger of infection 



