DIRECT EXAMINATION 



COUNTING f 



APPARATUS L 

 for 



MOLDS aWSPORES 



AREAS 



'/zs sq.m.m. 



I sq m m . 

 25s<7. mm. 



75.sqr.mm. 



CUBIC CONTENTS 

 '//is c.mrn. 

 '/sc.mm. 

 sc.mm. 

 isc. mm. 



FIG. 5. A, Counting apparatus for molds (hyphae and spores) and yeasts. The 

 rulings are 75 sq. mm., 25 sq. mm., i sq. mm. and %$ sq. mm. On either side of the 

 ruled area are glass slips 0.2 mm. thick, so that the entire capacity of the space 

 within the ruled area is 15 c.mm., subdivided into 5 c.mm., ^ c.mm. and 

 c.mm. areas. 



