The son of a Turin lawyer, Bartolomeo Gastaldi (1818 79) initially followed in his father's footsteps but then abandoned the law to pursue his passion for geology and palaeontology. Later one of the founders of the Italian Alpine Club, Gastaldi was especially interested in the geology and glaciology of the Alps in his native Piedmont. The mineral gastaldite is named after him. This work, first published in Italian in 1862, is reissued here in the 1865 English translation prepared by Charles Harcourt Chambers (1826 76) for the Anthropological Society of London. Its importance lies in the...