Royal Society Digital Journal Archive Free from 23 Nov to 28 Feb 2010.
The year “2010 is going to be a very special year at the Royal Society. As the worlds oldest science academy, we are looking forward to celebrating our 350th anniversary and to mark this special occasion we are making our digital archive containing more than 65,000 articles free to access.
The Royal Society Digital Journal Archive is easily the most comprehensive archive in science and contains some of the most significant scientific papers ever published. Covering almost 350 years of scientific research across the disciplines it is a priceless academic resource, free and exclusive to our journal package subscribers.
“The complete archive is available online at http://royalsocietypublishing.org/journals and is free as part of one of the Royal Society’s journal subscription packages.”
Note added 20 Dec 2015: it is terrific to see that access is still available.
WebElements November 23rd, 2010