Proceedings Of The Royal Geographical Society And Monthly Record Of Geography [March, 1891] - Mapping The Results Of The Challenger Expedition Over 15 Years After It Returned! Royal Geographical Society

"Conducted between 1872 and 1876, the Challenger Expedition was a voyage of scientific discovery and exploration that pioneered the field of oceanography and discovered thousands of new species. A crew of over 225 sailors and officers traveled approximately 80,000 miles during the momentous trip, which circumnavigated the globe and was the first ship to take a depth sounding in the Mariana Trench, one of the deepest points on the planet. So much data was accumulated during the voyage that new reports were being published into the mid-1890s! This is one such example, issued as part of Vol. XIII, No. 3 of the Proceedings of the Royal Geographical Society and Monthly Record of Geography. "The Meteorological Results of the 'Challenger' Expedition in Relation to Physical Geography" was authored by Alexander Buchan and contains twenty-one pages of printed text that relates barometric pressure systems and wind directions with the physical geography of the land. The report includes six folding maps of the world that visualize various data collected during the Challenger Expedition. According to Buchan's conclusion; "The isobaric maps show in the clearest and most conclusive manner, that the distribution of the pressure of the earth's atmosphere is determined by the geographical distribution of land and water, in their relations to the varying heat of the sun through the months of the year; and since the relative pressure determines the direction and force of the prevailing winds, and these, in their turn, the temperature, moisture, and rainfall, and in a very great degree the surface currents of the ocean, it is evident that there is here a principle applicable, not merely to the present state of the earth, but also to different distributions of land and water in past times." - pg. 154. Source: NOAA" Sheet Width (in) 6.25 Sheet Height (in) 9.75 Condition Description "192 pp. and six folding maps bound with glue and adhered to original blue illustrated wraps. Front cover shows a band of soiling about .5" thick along the bottom and spine. Contents are complete and generally quite good, with light scattered soiling and wear along the fore edge, consistent with age and use. Creasing on the maps, which are otherwise near fine. Good to very good condition overall."