* Dilutions given on the pD scale. pDx means 1 part of compound in 10" parts of solution. t Dilutions effecting 40 per cent reduction of the normal length of ileum strip. of each column produced about a 40 per cent reduction of the normal length of the ileum strip. The activities of the spasmolytic agents are recorded as the dilution which gave a 50 per cent reduction of the spasm; the figures are the means from 6 ileum strips. Dilutions are given on the pD ...
