Philosophical Transactions of the Royal Society of London

"The Philosophical Transactions of the Royal Society (Phil. Trans.) is a scientific journal published by the Royal Society of London. It was established in 1665,[1] making it the first journal in the world exclusively devoted to science, and it has remained in continuous publication ever since, making it the world's longest-running scientific journal." (from Wikipedia, 7/25/2011)

This collection contains works published before 1923.