348 A HISTORY OF NATIONAL TUBERCULOSIS ASSOCIATION 



science in no small degree. The accompanying bibliography 

 gives evidence of his untiring energy and enthusiasm in his 

 chosen specialty. To him belongs the credit of having first 

 called attention to the importance of tuberculous infection of the 

 digestive tract. He was one of the first to demonstrate beyond 

 any doubt the infection of human beings with the bovine type of 

 the tubercle bacillus. His experiments concerning this impor- 

 tant bacteriological discovery were published in 1902 in the 

 Transactions of the Annual Meeting of the Philadelphia Patho- 

 logical Society. 



Many honors were conferred upon Dr. Ravenel by the United 

 States Government, which appointed him as delegate to the 

 various international congresses, such as the one on hygiene, 

 which convened in Berlin in 1908; the International Congress 

 on Alimentary Hygiene in Brussels in 1910; and the Interna- 

 tional American Congress at Buenos Aires in 1910. Not only 

 the government, but also many scientific societies, honored Dr. 

 Ravenel. Honorary membership was conferred upon him by 

 the Cleveland Academy of Medicine, the Philadelphia Patho- 

 logical Society, the College of Physicians of Philadelphia, and 

 the Philadelphia Pediatric Society. Besides being a fellow of 

 these associations, Dr. Ravenel was made President of the 

 American Public Health Association in 1920. He is also a mem- 

 ber of the American School Hygiene Association, the American 

 Philosophic Society, and the Wisconsin Anti-Tuberculosis Asso- 

 ciation, of which he is also an ex-president. 



It is only natural that a man of Dr. Ravenel's attainments 

 should have offered his services to his country during the world 

 war. Having joined the Medical Reserve Corps in 1910 as a 

 First Lieutenant, he was commissioned Major July 19, 1917, 

 and ordered for training to Fort Riley, where he remained until 

 November, 1917, doing sanitary and some epidemiological work 

 at Camp Funston, assisting the Division Sanitary Inspector of the 

 Eighty-ninth Division. In November, 1917, he was ordered to 

 Roumania, and sailed from San Francisco on December 5. The 

 transport, however, was called back by wireless owing to the 

 Bolshevists' riots and the impossibility of getting through 

 Russia. In June, 1918, he was ordered to Camp Kearney, Cal., 



