1871 printing; full title: "JOURNAL OF RESEARCHES Into The NATURAL HISTORY AND GEOLOGY Of The COUNTRIES VISITED DURING THE VOYAGE Of H.M.S. BEAGLE ROUND THE WORLD, UNDER THE COMMAND OF CAPT. FITZ ROY, R.N.  by Charles Darwin, M.A., F.R.S. IN TWO VOLUMES, VOL. 1"; this is Volume 1 only; hardbound; Harper & Brothers, Publishers; fair condition; original owners sticker inside front (pic).
 
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"Journal of Researches into the Natural History and Geology of the Countries…" by Charles Darwin is a travel memoir and scientific journal published in 1839. The book chronicles Darwin's nearly five-year voyage aboard HMS Beagle, documenting his explorations across South America and beyond. Through vivid descriptions and detailed observations of biology, geology, and anthropology, Darwin records the experiences and discoveries that would shape his revolutionary thinking. Written as Western Europeans charted unknown territories, the work captures a pivotal moment when careful observation began revealing nature's deepest secrets.