Amateur scientists were important in the science of the eighteenth century as patrons, investors in talent and new equipment, as the maintainers of gardens and libraries, and, occasionally, as men who could and did make discoveries or significant innovations. The article shows that the 3rd Duke of Argyll was one of these men. He was also much more. Ilay's interests in science, because of his important political position in Scotland, touched not only his immediate friends but helped to reshape Scottish (...) culture itself. This essay looks at his scientific interests, his political career, and his patronage to argue that the results of his long career in politics were to institutionalize a new set of modern values in most Scottish institutions. (shrink)