84 ANNUAL REPORT. OF THE. Off. Doc. 



A knife used to cut a tuberculous lesion becomes coated with infectious mate- 

 rial and may be the means of spreading virulent bacilli over previously whole- 

 some flesh. In such cases, the contaminated surface should be removed and 

 destroyed. 



RULES FIOR THE GUIDANCE OF MEAT INSPECTORS IN DISPOSING OF 

 THE FLESH OF TUBERCULOUS CATTLE. 



A. The entire carcass shall be condemned: 



1. When it was observed before the death of the animal that it was 



suffering with fever. 



2. When there is a tuberculous cachexia, as shown by anemia or emacia- 



tion. 



3. When the lesions of tuberculosis are generalized, as shown by their 



presence not only at the usual seats of primary infection but also in 

 parts of the carcass or the organs that may be reached by the virus 

 of tubeiculosis only when carried in the systemic circulation. 



Lesion in the following organs are to be accepted as evidence ot 

 generalization when they occur in addition to local lesions in the 

 digestive or respiratory tract. 



a. Spleen. 



b. Kidney. 



c. Uterus. 



d. Udder. 



e. Bones. 



f. Joints. 



g. Brain and spinal cord. 



Multiple lesions in both lungs, if rather uniformly distributed, 

 and of approximately the same size, afford evidence of generali- 

 zation. 



4. When lesions of tuberculosis are found in the muscles or in the inter- 



muscular tissue or lymphatic glands. 



5. When the lesions are extensive on one of both body cavities. 



6. When the lesions are acute and actively 'progressive, especially if 



they are at the same time multiple. 



Evidence of active progress consists in signs of acute inflamma- 

 tion about the lesions, and in the presence of young tubercles. 



B. An organ or a part of a carcass shall be condemned: 



1. When it contains a lesion of tuberculosis. 



2. When the corresponding lymphatic glands are tuberculous. 



3. When the lesion is immediately adjacent to the flesh, as in the case 



of tuberculosis of the pleura or peritoneum. 



4. When it has been contaminated by transported tuberculous material, 



through contact with the floor, a soiled knife, or otherwise, during 

 butchering. 



C. The carcess if otherwise healthy shall be passed, after the parts containing 



local lesions are removed, if none of the conditions described under the 

 first section of the rules (A) is present. 



TjDder these rules, it is possible, with entire safety, to use a great 

 deal of material that was formerly destroyed. In consequence of 

 tills arrangement, it is possible for the State Livestock Sanitary 

 Board to accomplish a great deal more with the funds available foi- 

 its use than was formerly the case. 



The inspection of dairy cows and cattle for breeding purposes 

 coming from other states to Pennnsylvania has oeen continued. The 

 number of these animals examined during the year has been 15,850, 

 of which 269 were found to be afflicted with, tuberculosis and were 

 either returned to the place whence they came or were killed at the 

 owner's loss. 



In the spring of 1904, I was appointed by the Henry Phipps Insti 



