“…Liquid sulfur was the subject of several observations (27,88,89,274,276,277,278,282) of the way in which positions of maxima in the intensity change with temperature. In an attempt to resolve conflicting findings Gingrich (137) had made photographic measurements over the range 124-300°, and found an apparent shift near 160°, the temperature above which sudden cooling yields plastic or amorphous sulfur.…”