Assertion: fine powder | /r/Synonym | flowers of sulphur
Facets:
Source sentences:
text: A charge of about 5J cwt. of grough sulphur in small pieces being placed in the retort and the furnace lighted, the pipe leading to the dome is left open, as well as the plug-hole in the lid, but that leading to the receiving pot is closed ; after about two hours, a pale yellow vapour rises, when the plug in the lid is put in and the vapour allowed to pass into the dome, wdiere it " sublimes" or con-denses on the.sides and floor in the form of a fine powder, known as " flowers of sulphur.