ON THE PHAGOCYTES OF THE ALIMENTARY CANAL. 505 
Fie. 14.—A group of three macrophages, containing :—a, ¢, g, #. Micro- 
phages with more or less digested intracellular bacilli. Notice especially a 
very irregular bacillus (a). 4, d, ef A, i, &, 7. Leucocytes in various stages 
of destruction. (Zeiss, id.) 
Fie. 15.—Macrophage, containing:—a, 4. Microphages. y, 6, point to 
partially digested bacilli. a, 6. Bacilli in the early stage of intracellular 
destruction. ec. Vacuole. (Zeiss, 4 + 5.) 
Fic. 16.—Macrophage, containing :—a, 4, c. Particles of foreign matters 
(coal, dust). (Zeiss, 3 +  ;.) 
Fic. 17.—Macrophage, containing :—a, 4,c, d. Particles of foreign matters. 
e,f, g. Partially digested leucocytes. (Zeiss, id.) : 
Fie. 18.—Macrophage, containing :—a. Small particle of charcoal dust. 
c, d. Partially digested leucocytes. (Zeiss, id.) 
Numerous micrococci are lying scattered throughout the macrophage. 
e. Points to the nucleus. . Points to the vacuole. (Zeiss, id.) 
Fie. 19.—Macrophage, containing :—a. Particle of charcoal. 4. Leucocyte, 
with an included charcoal particle. c. Vacuole. 
Micrococci in various stages of degeneration are scattered in the cell. 
(Zeiss, id.) 
(N.B.—The macrophages in Figs. 1 to 15 were all drawn from the 
rabbit’s (Peyer’s) patch, after staining with alum-carmine, and Gram’s 
method. The Figs. 16 to 19. were drawn from the dog’s tonsil, after 
staining with Léffler’s blue. The contours of the macrophages and of their 
contents were always drawn with the help of the camera lucida.) 
