344 



STUDIES ON FERMENTATION. 



of flasks holding from 4 to 9 litres (from 7 to 10 or 11 pints), 

 (Fig. 79), or copper cans, tinned inside, holding from 10 to 15 



Fig. 78. 



Fig. 79. 



litres (2|- to 3^ gallons), and provided at the upper conical end 



