This fragmentary work elaborates on earlier studies undertaken by the Italian scientist, philosopher, and mathematician Galileo Galilei (1564–1642) on the Greek mathematician and physicist Archimedes of Syracuse (circa 287 BCE–circa 212 BCE). This study contains notes about the theories of buoyancy and floatation, which Galileo later gathered in a more coherent form in his treatise Discorso… intorno alle cose che stanno in sù l’acqua (Discourse on floating bodies), published in Florence in 1612. As with his more prominent work of astronomy, Sidereus Nuncius (Starry messenger), Galileo’s ...