On attempting to remove it by washing, much pain was caused.

The quantity removed by soap and water at one time was sufficient to make four basins of water as black as if with India ink.

It seemed to be physiologically analogous to melanosis.

The cessation of the secretion on the forehead was followed by the ejection of a similar substance from the bowel, stomach, and kidney.

The secretion was more abundant during the night, and at one time in its course an erysipelas-eruption made its appearance.