The recognition of meteorites -- Curious landforms of the Colorado plateau -- Meteor crater, Arizoma -- More meteorite craters -- Explosive impact -- Cryptovolcanic structure -- The work of Harvey Harlow Nininger -- Meteorite craters known at mid-century -- The craters of the moon -- Coesite and shatter cones -- Meterotire craters in Canada and crater forms -- More controversy, more craters -- Impact metamorphism -- The Bushveld Igneous Complex and the Vredefort Ring -- Sudbury: a geological puzzle -- The Origin of Tekities and the significance of cratering.
