Professor Theobald Smith (1859-still living) is a technical 
scientist. Before any physician knew how to prevent disease, 
technical biologists had to discover how the disease germs live. 
Such is the work of Professor Smith, and he is an acknowledged 
authority in his field 
His best known discoveries are as follows: 1. He discovered 
that the protozoan parasite in the blood of cattle which causes 
Texas cattle fever is also found in ticks. It is carried from one 
cow to another by the infected ticks. This discovery led to simi¬ 
lar discoveries in Malaria, Sleeping Sickness, and other protozoan 
diseases. 2. His scholarly researches in human tuberculosis 
have been of great value to mankind. 3. Present standards of 
meat inspection are based upon his investigations into the dis¬ 
eases of cattle and other food animals. 4. He was a pioneer in 
the manufacture and 'extensive public use of antitoxin. 
