Going around with sulfur in a hot humid laboratory

Two fans were stirring the June air in a chemistry laboratory. Don’t forget it that it was the Japanese June air in a century of global-warming.
After some introduction, Mr. Kaneda, a chemistry teacher, showed a demonstration experiment. The 20 students in the room, or 10 pairs of two, gathered around him in front of the lab in a half circle.
The teacher stroke a match, and lighted a Bunsen burner. The burner gave out and light-orange flame. “Not so good. It looks like the Olimpic Flame,” muttered him in a large voice. He turned a sleeve of the air vent till the burner provided a light-blue cone, which gives the heat of around 2,000 centigrade, according to him.
Mr. Kaneda put sulfur into a test tube, and carefully shuffled it with a test tube clamp so as that every part of its quarter bottom should get the heat all over.
“The sulfur liquefies, and becomes a light-yellow liquid. As you keep heating it in the heat of around 100 centigrade, it becomes dark black, and loses liquidity,” as he said, he poured the black matter into the water of a beaker. His Hermione-Granger-like skillfulness made the matter form a string of plastic sulfur in the water. The scene and the smell of the heated sulfur gave us the feeling as if we had been in a Potions class.
By the time, α-sulfur (in its orthorhombic system) and β-sulfur (in its monoclinic system) he had prepared revealed their crystal figures.
The students started their own performance, giving out the more of rotten-egg-like smell. With their Ronald-Bilius-Weasley-like clumsiness, their difference between α-sulfur and β-sulfur was not so crystal clear.