Michael Hunter (ed.), Robert Boyle's ‘Heads’ and ‘Inquiries’, Robert Boyle Project Occasional Papers No. 1, London, Robert Boyle Project, Birkbeck, University of London, 2005, pp. xvi, 37 (0-9551608-0-4; 978-0-9551608-0-6). Michael Hunter and Harriet Knight (eds), Unpublished material relating to Robert Boyle's Memoirs for the natural history of human blood, Robert Boyle Project Occasional Papers No. 2, London, Robert Boyle Project, Birkbeck, University of London, 2005, pp. xv, 50 (0-9551608-1-2; 978-0-9551608-1-3). Copies of both books may be downloaded as PDF files from the Robert Boyle website at www.bbk.ac.uk/boyle.