Note 177 — Chapter VII · New Process for the Manufacture of Beer.

We know also from the direct experiments of M. Schützenberger, performed on aerated water with which yeast had been mixed, that yeast causes all the oxygen in solution to disappear very quickly, so that hydrosulphite gives no evidence of a trace. (See Schützenberger, Revue scientifique, vol. iii. (2), April, 1874).