Hammick and Andrew's equation for calculating the parachor of mixtures of two liquids has been modified to apply to the calculation of parachor of solid inorganic salts in solution. The parachor values of 15 salts found in many cases are in good agreement with the calculated \(\sum\)\([P]\) of the salts concerned. The atomic parachor of potassium is found to be (no) in the case of monovalent salts and (rob) when the salt is bivalent containing two atoms of potassium. The parachor values of the g potassium salts : carbonate, bicarbonate, pyrosulphate, chromate, chlorate, bromate, perchlorate, cyanide and sulphocyanide which have not been previously determined are now found by this method.