London, Linnean Society, 1940. An offprint from the April, 1940 Proceedings of the Linnean Society of London. A 30-page article in which Simpson, who was President of the Royal Meteorological Society, first acknowledges that climate change is the purview of geology rather than meteorology, and then examines three theories for climate change: the redistribution of land and water; changes in the Earth's orbit; and changes in solar radiation. Written right at the cusp of change in the mechanism for global warming, when the build up of greenhouse gases from the Industrial Revolution was just reaching the tipping point where they would become a driving force in climate change, overtaking the previous, seemingly random, fluctuations in global temperatures. Bound in wrappers; small tear at upper spine; edge-sunned; very good. One listing found in OCLC. [#033605] SOLD