On the physiological effects of severe and protracted muscular exercise; with special reference to the influence of exercise upon the excretion of nitrogen.

Flint made investigations on the nitrogen output of a long-distance walker, before, during, and after the latter’s attempt to walk 400 miles in five days. The useful data in this paper are often referred to in discussions on the subject. Edition in book form, New York, D. Appleton, 1871.