Studies of the adsorption of polar organic com pounds on freshly machined surfaces, were con tinued. Adsorption of nonadecanol from cyclohex ane solution was not observed under the condi tions and concentrations used. Studies with un saturated acids indicate that the adsorption on freshly machined metal surfaces is concentration dependent and there is polylayer formation. The extent of polylayer formation increases as the number of double bonds increases. Metals such as Cu, Mg, Pb, and Al were used in the above study. Adsorption of calcium nonadecanoate on metal sur faces is physical in nature, following type II or IV adsorption isotherms at lower pressures. At traction between the metal surface and the adsor bate is due to dipole-induced dipole interactions. There is no metal-ion exchange. Factors that de crease ac of the fresh metal surfaces de crease the extent of adsorption. None of the metals employed gave a full monolayer coverage with calcium nonadecanoate, and adsorption de pended on concentration.