CHEMISTRY International The News Magazine of IUPAC April-June 2018 Volume 40 No. 2 Chemistry and Cultural Heritage Jamaican Chemists in Early Global Communication Everything Flows INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY Chemistry International CHEMISTRY International Subscriptions Four issues of Chemistry International (ISSN 0193-6484) will be published quarterly in 2018 (one volume The News Magazine of the International Union of Pure and per annum) in January, April, July, and October. The 2018 subscription rate is USD 74.00 for individuals or Applied Chemistry (IUPAC) USD 116.00 for institutional subscription. Special rates for Print and Print + Online are available for IUPAC Members and Affiliate Members; see http://iupac.org/what-we-do/journals/chemistry-international/ for All information regarding notes for contributors, sub- more information. scriptions, Open Access, back volumes and orders is available online at www.degruyter.com/ci ISSN 0193-6484, eISSN 1365-2192 Periodicals postage paid at Durham, NC 27709-9990 and additional mailing offices. POSTMASTER: Send Managing Editor: address changes to Chemistry International, IUPAC Secretariat, PO Box 13757, Research Triangle Park, NC Fabienne Meyers 27709-3757, USA. IUPAC, c/o Department of Chemistry Boston University © 2018 International Union of Pure and Applied Chemistry. This work is licensed under a Metcalf Center for Science and Engineering Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. 590 Commonwealth Ave. Boston, MA 02215, USA E-mail:
[email protected], Phone: +1 617 358 0410 Cover: The understanding of the materials which make up works of art is key for conservation. Advanced analytical techniques are applied to characterize the materials aiming to establish whether a work is at risk Production: Joshua Gannon (detail from a painting of Amadeo de Souza-Cardoso, Fundação Calouste Gulbenkian collection).