A detailed account of the origins of biogeography thinking, since the initial religious ideas of Linnaeus and others in relation to Noah's Ark and the Deluge (notwithstanding clever explanations of altitudinal distributions and climatic matching of species in mont Ararat), to the evolutionary view of Darwin and Wallace. Especially interesting to see how Darwin's ideas were developing and mutating after the influence of Lyell's land masses movements (uplift, subsidence) changing distribution patterns, later modified by his experimental results on dispersal through salt water and then considering divergence and selection. A rich prose, although not very catchy. Very well documented, but a bit verbose sometimes. Anyway, a good read for anyone intersted in the history of natural sciences.