Some experimental and clinical observations concerning states of increased intracranial tension.

According to Theodore Janeway (No. 11572), Cushing was the first to recommend routine measurement of blood pressure during surgery using the Riva Rocci sphygmomanometer.(See No. 2804). Cushing visited Riva Rocci at Pavia in 1901, made drawings, and was given an example of the device. Along with George Crile, Cushing played a major role in popularizing Riva Rocci's mercury sphygmomanometer. In this paper Cushing wrote, "For the proper estimation of gradual alterations in arterial pressure in clinical cases reliance should not be placed alone on the palpating finger any more than the hand should be depended upon for the determination of a patient's temperature."