Carmen Giunta
Links from presentation in the Division of the History of Chemistry at the 234th National Meeting of the American Chemical Society, August 19, 2007.
These links can be useful gateways to the older chemical literature.
The Robert Boyle Project at Birkbeck College, University of London: "a complete set of images of the core volumes of the Boyle Papers at the Royal Society." For example, page from the 1670s or '80s titled "A description of the true thermometer."
Google Patents: US Patents searchable in full text as interpreted by OCR.
Esp@cenet by the European Patent Office, at UK Intellectual Property office. It contains worldwide patents (including US); looking up a patent issued in one country will also turn up equivalent patents issued elsewhere.
Eighteenth Century Collections Online (ECCO), a database of Thomson-Gale: every significant English- and foreign-language title printed in Great Britain during the 18th century, plus important works from the Americas.