Later refutation of the theory of spontaneous generation. Spallanzani’s conclusions were similar to those expressed by Pasteur nearly a century later. His collected works were published in Milan, 2 vols., 1932-33. English translation as Dissertations relative to the natural history of animals and vegetables. 2 vols., London, 1784. Digital facsimile of the "new edition, corrected and enlarged" (1789) from the Internet Archive at this link.