Hardy, J.D., Wolff, H.G., and Goodell, H.: Studies on Pain. A New Method for Measuring Pain Threshold: Observations on Spatial Summation of Pain, J. Clin. Investigation19: 649, 1940.
2.
Wolff, H.G., Hardy, J.D., and Goodell, H.: Studies on Pain. Measurement of the Effect of Morphine, Codeine and Other Opiates on the Pain Threshold and an Analysis of Their Relation to the Pain Experience, J. Clin. Investigation19: 659, 1940.
3.
Schumacher, G.A., Goodell, H., Hardy, J.D., and Wolff, H.G.: Uniformity of the Pain Threshold in Man , Science92: 110, 1940.
4.
Chapman, W.P. , and Jones, C.M.: Variations in Cutaneous and Visceral Pain Sensitivity in Normal Subjects, J. Clin. Investigation23: 81, 1944.
5.
Hardy, J.D., and Javert, C.T.: Studies on Pain: Measurements of Pain Intensity in Childbirth, J. Clin. Investigation28: 153, 1949.
6.
Kibler, R.F. , and Schnaper, H.W.: The Effect of Procaine Administered Intravenously on the Cutaneous Pain Threshold, Am. J. Med. Sci. 220: 199, 1950.
7.
Denton, J.E. , and Beecher, H.K.: Methods in the Clinical Evaluation of New Analgesics, J. A. M. A. 141: 1051, 1949.
8.
Potelunas, C.B. , Meixner, M.D., and Hardy, J.D.: Measurement of Pain Threshold and Superficial Hyperalgesia in Diseases of the Skin, J. Invest. Dermat. 12: 307, 1949.
9.
Hardy, J.D., Wolff, H.G., and Goodell, H.: Studies on Pain: Discrimination of Differences in Intensity of a Pain Stimulus as a Basis of a Scale of Pain Intensity, J. Clin. Investigation26: 1152, 1947.
10.
Hardy, J.D. , Wolff, H.G., and Goodell, H.: Studies on Pain: An Investigation of Some Quantitative Aspects of the Dol Scale of Pain Intensity, J. Clin. Investigation27: 380, 1948.
11.
Birren, J.E. , Schapiro, H.B., and Miller, J.H.: The Effect of Salicylate Upon Pain Sensitivity , J. Pharmacol. and Exper. Therap. 100: 67, 1950.
12.
Sonnenschein, R.R., and Ivy, A.C.: Failure of Oral Antipyretic Drugs to Alter Normal Human Pain Thresholds, J. Pharmacol. and Exper. Therap . 97: 308, 1949.
13.
Kutscher, A.H. : The Analgesic Action of Subdamine, New York State J. Med. In press.
