Ayricultural Gazette of N'.S.W., April 3, 1920. 



Plates exposed to atmosphere inside factory for five minutes, showing 



growth of colonies of moulds, yeasts and bacteria, demonstrating 



the extent of infection from the interior of an old 



badly-planned factory. 'Original.) 



B — Cream Attemperator Room. Media used, acid aafar. 

 D2— Butter-working and Packing Room Media used, litmus lactose agar. 

 F— Butler Cold-storeroom, adjoining Butter-working Dnd Packing Room. 

 Media used, ordinary agar. 



