ASTRONOMY CROLL, JAMES. Climate and Time in their Geological Relations. NY, 1875 + Stellar Evolution. NY, 1889

CROLL, JAMES. Climate and Time in their Geological Relations: A Theory of Secular Changes of the Earth's Climate. 8 color plates and maps * Stellar Evolution and its Relations to Geological Time. Together, 2 volumes. 8vo, original cloth, second volume with spine ends chipped, shelf label removed, and Harvard College Observatory bookplate (released); contents of both volumes clean. New York, 1875; 1889