526 



CONTAGIOUS DISEASES. 



Fig. 15. — Tubercle bacillus. 



a. Giant cell invaded by bacilli. 



b. Minute germs. 



X 1400. 







q: 





- ^^/-? ''®i^' 



Fig. 16.— Tubercular nodule. x 300. 



o. Caseated centre of nodule. 

 6. Giant cells. 



c. Reticulum of nodule with epithelium-like cells. 



d. Leucocytes, red cells, &c. 



€. Portions of adjacent alvtoli. 



