Allotropy is the property of some chemical elements to exist in two or more different forms, known as allotropes. These differ from each other in the way that the same atoms are arranged. The allotropes of carbon, for example, include diamond, graphite, fullerenes and graphene.
These tests for a larger work, use sulphur, which is second only to carbon in the number of allotropes it can form and are inspired by Hiorn’s “Seizure” and Ballard’s “Crystal World”. They are representations of a possible future where the atmosphere is so loaded with pollutants that they precipitate from the air itself and crystalize onto natural objects.