explains the causes of Hutton's failure, [30]
'Plutonism,' 'Vulcanism,' or 'Huttonism,' [18]
Poets and Evolution, [16]
Prestwich, Sir J., opposition to Lyell's views, [72]
Prevost, Constant, aid to Lyell, [50];
opposition to Cuvier, [50]
Priestley, persecution of, [21], [69]
Principles of Geology, first idea of, [55];
early draft sent to publisher in 1827, [56];
withdrawn and rewritten in 1830, [56];