In exps. on the preservation of sweet cider by freezing, [long dash]2.2[degree] C was found inadequate to suppress growth of all yeast strains. One pure culture of Saccharomyces studied proved capable, in beer wort, of increasing from 1,800,000 cells per cu. cm. (haemocytometer count) to 48,400,000 cells per cu. cm. in 60 days, at the temp. mentioned. This 60 day count at [long dash]2.2[degree] C was equalled in 23 hrs. at 21[degree] C. The yeast in question fermented dextrose, sucrose and levulose, but not maltose or lactose.