In 1855 he brought before the Geological Society of London his paper On the possible Extension of the Coal-Measures beneath the South-Eastern part of England, in which he pointed out on well-considered theoretical grounds the likelihood of coal measures being some day reached in that area.
1855 präsentierte er der Geological Society of London seine Arbeit On the possible Extension of the Coal-Measures beneath the South-Eastern part of England, in der er die Gründe darlegte, warum in dieser Gegend kohleführende Schichten im Untergrund vorkommen müssten.