The normal limits of blood pressure have been derived by statistical method. They vary with age. Cases where the B.P. is in border lines should be thoroughly examined and those falling above the lower limits of hypertension should be taken as abnormal. Lower limits below 150 mm after the adult age may be taken as low systolic pressure. Suggests that some procedure should be adopted uniformly, specially in medical examinations for insurance and services. Emphasises on thorough search for cardiovascular disease in hypertension cases.