RESPIRATORY SPACES OF THE LUNGS 385 
5 ; 2a <7 WX) = = 
ae ON SSS 
EL BSH 
e 
if 
t 
4 
» Gud 
Fig. 36 Reticular fibers. The lung of the dog. Bielschowsky’s staining. 
x 1000. Reticular fibers on the capillaries and in the intereapillary spaces are 
shown. 
Fig. 37 Reticular fibers. Human lung. Bielschowsky’s staining. X 350. 
Fig. 38 Reticular fibers. The lung of the rabbit embryo. Bielschowsky’s 
staining. X 350. 
