The anti-spasmodic action of opium alkaloids has been shown by Macht2 to be due to the presence of the benzyl group in the alkaloids. Benzyl benzoate and many other benzyl esters have been shown to possess this physiological pr~ perty.~ In the last few years many benzyl esters have been made, chiefly with the desire of finding some new ester that would have the physiological properties of benzyl benzoate but have physical properties that ...
