Who he was
A professor in Adelaide, South Australia, in the 1870s. South Australia's geological survey credits him with discovering evidence of an ancient glaciation at Hallett Cove: rock surfaces on the clifftops, polished smooth and scratched in straight lines.
The scratched rock
In 1877 he showed a glaciated rock from Hallett Cove at a meeting of the Philosophical Society of Adelaide. The scratches were cut by stones frozen into the base of moving ice. A state trail guide gives the year of the discovery as 1875; the meeting record is from 1877.
Too young, at first
At first, the ice at Hallett Cove was taken to be young, and matched with the glacial features of the last ice age in Britain and Europe. It turned out to be far older, from a time when Australia lay near the South Pole.