Agricidtwal Gazette of N.S.W., Maj 3, 1920. 



cs 



B7 



B8 



Plates exposed to atmosphere inside factory for two and a-half minutes, 

 showing growth of colonies of moulds and bacteria. 



B6 — -Acid Agar Plate— Cream Atteiiiperator Room. 



B7— Acid Agar Plate— Churning Room. 



B8— Ordinary Agar Plate — Cold Room at chilling temperature. 



(Original.) 



