Philosophical Transactions, Vol. 1 (1665/6)

The Royal Society have thrown their archives open to world + dog online, as The Register says. They're available here. [Edited: This offer is only open till December 2006, so getcher history of science while you can.]

This is, pretty much, the entire history of science in the UK for hundreds of years.

I can't hope to pick the best for you, but here's a small sample of interesting things I found looking through.

( From Volume 1, 1665-1666: )