10 MARCH 1923, Page 22

Chemistry in the Service of the Community. By Arnold Rowsby

Tankard. (Bonn. Is. net.)

Mr. Tankard, who is the Public Analyst at Hull, in this pamphlet enumerates the chief functions of the chemist in such matters as the synthetic production of fertilizers, the purification of foodstuffs and water, and the economic use of coal without pollution of the air. We are glad to note that the proportion of dirty milk annually discovered in Hull has diminished from 20 per cent. to 1 per cent. in the last ten years.