Note 1 — Chapter XXIX
Reading edition
Professor Svante August Arrhenius, in his Worlds in the Making—the conception that life is universally diffused, constantly emitted from all habitable worlds in the form of spores which traverse space for years and ages, the majority being ultimately destroyed by the heat of some blazing star, but some few finding a resting-place on globes which have reached the habitable stage.—W. T. G.