No. 6. DEPARTMENT OF AGRICULTURE. lOB 



eradicated from a herd by meaus of this sort of iuspectiou. It is re- 

 sort'id to for the purpose of removiog the animals that are most 

 daiigerous at the time and thus afford a temporary relief until such 

 time as it may be possible to make u complete inspection and tuber- 

 culin test. 



During the year, about 1G,00U cottle have been tested or other- 

 wise inspected and of these USO were found to be tubercular and 

 were destroyed. The tubercular cattle were in 438 herds compris- 

 ing 5,928 members. 



The following paper from the laboratory of the tState Live Stock 

 Sanitary Board on the intercommunicability of human and bovine 

 tuberculosis by ]^r. Mazyck P. Kavenel is printed there because it fur- 

 nishes a full statement of what has been done and the conclusions 

 upon the important subject of which it treats. The paper was read 

 before the Pathological Society of Philadelphia, April 24th, 1902, and 

 is reprinted from the proceedings of the Pathological Society for 

 May, 19U2. 



THE INTERCOMMUNICABILITY OP HUMAN AND BOVINE 



TUBERCULOSIS. 



BY MAZYCK P. RAVENEL. M.U., Bactcrhihjgiat uf the State Live Stock Sanitary Hoard. 



I find it difficult to express adequately my deep sense of the honor 

 whiclh has been paid me by the invitation of your committee to give 

 tlie address of the evening on this occasion. The Pathological So- 

 ciety of Philadelphia has from its foundation bad a most honorable 

 position among the scientific bodies of the world, and has always 

 etood for what is best and most advanced in the branch of medical 

 knowledge to which it is particularly devoted. I Ihave always felt 

 it a high privilege to be able to inscribe myself a member, and to 

 have the seal of the society put to such contributions as I have been 

 able to make. More than this 1 never thought of aspiring to, hence 

 the invitation to give this address was as unexpected as it was 

 grateful to me. 



The hesitation whicih I naturally felt over accepting such a re- 

 si>on6ible office was relieved, to a considerable extent, by the sug- 

 gestion of your committee that I should speak on some phase of the 

 tuberculosis problem, which has been an object of special study at 

 the laboratory of the State Live Stock Sanitary Board of Pennsyl- 

 vania, and in which I have had the constant advice and assistance 

 8 



