apparatus is generally not required for the making of My aim in this book is simple. It is to set out in a logical useful sedimentological experiments. Most of the equip- way what I believe is the minimum that the senior ment needed for those I describe can be found in the kit- undergraduate and beginning postgraduate student in the Earth sciences should nowadays know of general chen, bathroom or general laboratory, and the materials most often required - sand, clay and flow-marking physics, in order to be able to understand (rather than substances - are cheaply and widely available. As form...