BACTERIOLOGICAL APPARATUS 
CO Pt 
ECC CO 
[nnn hs 
i 
i H 
L il 
HE 
4 qt iin + 
i h 
Zappert-Ewing Ruling 
pom 
fon 
basa 
1 
iat 
Zappert-Neubauer Ruling | Bass Ruling (15x) 
Fig. 13.—Diagrams Showing the Commonest Hemocytometer Rulings. 
