12 



Bulletin 150. 



Bavarian Monasteries 50 per cent of the 3'oiing postulants die in 

 a few years tuberculous. In New York City charity hospital 30 

 per cent of all deaths show tubercle lesions. Where country 

 cows are tuberculous to from i to 5 per cent, city cows are so 

 from 6 to 20 per cent and upward. On the contrary our prairie 

 and plains fat cattle show but 0.02 per cent tuberculous. In the 

 Southern States with an unbroken outdoor life country cattle are 

 nearl}^ all sound, whereas in large cities like New Orleans they 

 are largely tuberculous. 



APPEARANCE AND FORMATION OF TUBERCLE. 



The term tubercle is drawn from the rounded nodular form of 

 the diseased process. The bacillus lodged in the tissue multiplies 



rUo. -S- 



2. — A drawing of a section of a very young tubercle in spleen. ( Thoma). 



and causes congestion and extraordinar3^ growth of cells. The 

 affected points may be at first no larger than millet seed, but 

 these ma}^ increase and run together so as to form conglomerate 

 masses of one, six or nine inches in diameter. As the cell growth 

 increases, the central ones degenerate, die, and form a yellowish 



