VARIATION IN THE FUNCTIONAL POWER OF HUMAN SWEAT GLANDS

Abstract
A method has been worked out for the measurement of the volume of sweat produced by individual glands. A special paper, impregnated with iodine, absorbs water in a uniform way and shows the area of wetting by a sharply defined blue dot. Indirect calibrations showed that 1 cm.3 of water would form a spot of 700 cm.2 area, and that this relation of volume to area was a constant one over a wide range. The actual volumes encountered in prints of the sweat glands were from 5 x 10–9 to 4 x 10–6 cm.3.