De l'origine des fontaines


Pierre Perrault
Title PageFrontis

This volume presents the first serious attempt to measure rainfall. Perrault, a French llawyer who took an interest in meteorology and geology, reviewed earlier hypotheses on the origins of springs and proposed an experimental investigation to prove that rainfall alone is sufficient to sustain the flow of springs and rivers. The result of his experiment was proof that rainfall is more than adequate to supply river flow.