From the NRO Corner blog:
This is going around the math-sci listservs:
The Royal Society has digitized & online all of its publications. For the first time the Archive provides online access to all journal content, from Volume One, Issue One in March 1665 until the latest modern research published today ahead of print. And until December the archive is freely available to anyone on the internet to explore.
This is an unbelievable sci/tech resource — 60,000 articles by folks from Newton to Hawking.