“…Ordinary refrigeration cannot be relied upon to retard mould growth indefinitely; a temperature of -23" is required to stop the growth of Oospora lactis, and the growth of moulds causing the most serious defects (Alternaria, Hormodendron, P h o m and Stemphylium) is not appreciably retarded a t 5". At -18" visible growth is prevented but the moulds are not killed (Macy &-Steele, 1934). Danish workers (Orla-Jensen Sr Otte, 1933) recommend a storage temperature not higher than -4".…”