© Science Museum / Science & Society Picture Library
'Showing the Principal Causes of Geological Changes on the Earth's Surface'. The chart, part of a set of 13 coloured engravings as Scientific Educational Charts, illustrates the main agents of change in the earth's geography, which are listed below, including: evapouration from the sea; decomposition of rocks; removal of parts of rocks; transport of detritus by river; the destructive action of the sea; drifting of large land mases; the formation of deltas by accumulation; and the formation of sand banks, as well as describing the effects of volcanoes, earthquakes, icebergs and glaciers in forming the landscape. Drawn and engraved by John Emslie.
'Diagram of Natural Phenomena', c 1850's.