Glacières; or, Freezing Caverns

The author documents firsthand explorations of subterranean ice features found in pits, caves, and windholes across mountain regions, describing their morphology—ice slopes, stalagmites, stalactites, cones, fissures—and recording measurements, sections, and photographs. He combines travelogues and field observations with a systematic examination of the physical causes of subterranean freezing, thermometric data, geological cross sections, and comparative accounts from many localities. The work concludes with indexed lists of known freezing caverns, collected opinions from other observers, and bibliographic references, illustrated by plans and photographs to aid identification and further study.