Blood Pressure

in connection with Major Rogers' valuable work in the treatment of cholera, it seemed to me it would be of interest to study it among the population met with in an ordinary district jail. The instrument used in estimating the blood pressure was one of the modifications of the Riva-Rocci Mercury Sphygmomanometer, namely, French's made by Down Bros. It is a most useful modification, because by a simple arrangement the mercury is prevented from being upset and the instrument is therefore always ready for use and can be carried anywhere without risk. The average blood pressure among healthy European males is said to vary between 125 and 135 m.m. Among Indians it is stated by Major Rogers in his book on Cholera and its treatment that u the normal blood pressure is only from 100 to 120 m.m.," but what the average is among healthy adult males I have never seen stated.