He was able to make the 1860 Adulteration of Food Act work to stem the addition of red lead, strychnine, sand, plaster of Paris and mercury to basic diets, to prevent narcotics and hallucinogenics being added to popular drinks, and polluted water and salt being added to milk. According to his own reckoning, no less than eight million pounds of contaminated food was detected, analysed and condemned during his time as public analyst.