It tends to destroy insects and weeds, and gets rid of acidity of the soil.
At the same time the acidity is markedly reduced.
In 1780 he proved that the acidity of sour milk is due to what was afterwards called lactic acid; and by boiling milk sugar with nitric acid he obtained mucic acid.
After absorption into the blood, the acetates are oxidized to carbonates, and therefore are remote alkalies, and are administered whenever it is desired to increase the alkalinity of the blood or to reduce the acidity of the urine, without exerting the disturbing influence of alkalies upon the digestive tract.
At the end of the melting down, dephosphorization is then impeded by the temporary acidity of the slag, as just explained.