204 



are more susceptible to the disease than the other domestic 

 animals ; however, sheep, horses, dogs and cats occasionally 

 become infected. Many of the wild animals when caged 

 succumb to this disease. Caged monkeys, lions, tigers, deer, 

 elk, kangaroos, antelope and birds have been known to die 

 of tuberculosis. Rats and mice are susceptible and instances 

 have been recorded where they have contracted tuberculosis 

 in houses that were inhabited by tuberlous persons. Guinea 

 pigs and rabbits are very susceptible. 



ITS PREVALENCE IN CATTLE. 



In Europe. — According to Arloing 0.5 per cent, of the 

 cattle of France are tuberculous; in Paris, 6 per cent.; in 

 Baden, Germany, 0.2 per cent.; in the province of Bavaria, 

 0.225 percent.; in Belgium, 0.4 per cent.; in Holland, 20 per 

 cent.; in Leipsic 20 per cent.; in Edinburgh 26 per cent. 



The above per centages (from Law's bulletin) shows how 

 tuberculosis in cattle varies in the thickly populated cities 

 and countries of Europe. It will be observed that the cat- 

 tle of the cities are more frequently tuberculous than the 

 cattle of the country(-). In some local herds of Europe 

 75 per cent, have been found to be tuberculous. According 

 to the records in the slaughter houses of Germany cows are 

 more frequently tuberculous than oxen or calves. In fact, 



1. It is interesting to note in this connection the following valuable 

 table prepared by Dr. Lagnaeu, showing the gradual increase of tu- 

 berculosis when the smaller cities are compared with the larger. 

 These tables were made from the records of 662 cities in France : 



95 cities with less than 5,000 inhabitants 1 . 81 



332 cities of between 5,000 and 10,000 inhabitants 2.16 



127 " " 10,000 and 20,000 " 2.71 



50 " " 20,000and 30,000 " 2.88 



46 " " SO.OOOand 100,000 " 3.05 



11 " " 100,000 and 430,000 " 3.65 



Paris with 2,224,704 inhabitants 4.91 



The above table shows the number of persons who die annually 

 from tuberculosis of the lungs (consumption) to every 1,000 inhabi- 

 tants in cities of different population. The table does not take into 

 comparison any of the other forms of tuberculosis. 



