INDEX OF INFECTIOUS DISEASES. 683 
Tetanus. Due to infection by the tetanus bacillus, 388. 
Texas Fever in Cattle. Due to infection by a blood parasite 
belonging to the protozoa, described by Smith under the name of 
pyrosoma bigeminum. 
Tonsillitis. (See Angina. ) 
Trachoma. Various micrococci have been found in trachoma 
by different investigators and claimed by them to cause the affection, 
According to Fuchs and Hoor, trachoma is frequently, if not always, 
due to infection by the gonococcus. 
Tuberculosis. All forms of tubercular infection in man and 
animals are due to the bacillus tuberculosis. The bacillus which 
causes tuberculosis in cattle, 299, and the one which produces it in 
fowls, 300, though closely resembling the tubercle bacillus in man, 
possess some slight differences, 
Typhoid Fever. Due to infection by bacillus typhi abdomi- 
nalis, 402. 
Typhus Fever. The specific causative agent of this, under 
certain circumstances, extremely infectious disease has not yet been 
determined. : 
Varicella. No micro-organism has been demonstrated to bear 
any relation to the etiology of this affection. 
Variola and Vaccinia. Probably due to protozoa, 651. The 
common pus cocci and various other micro-organisms are found in 
the characteristic pustular eruption ; their presence is due to sec- 
ondary infection of the pustules, and has nothing to do with the 
cause of the disease, 657 
Whooping-cough. Considered by Koplik and others to be due 
to a small bacillus found in the nasal and bronchial secretions in 
cases of the disease, 613. 
Wool-sorter’s Disease. Due to anthrax bacillus. 
Yellow Fever. Sanarelli (1897) discovered a small bacillus, 609, 
in the blood and tissues of yellow fever cadavers, which he named 
‘bacillus igteroides,” and claimed to be the specific cause of yellow 
fever, 60% 
