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. 2021 May 7;6(3):250–272. doi: 10.1080/20961790.2021.1898079

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© 2021 The Author(s). Published by Taylor & Francis Group on behalf of the Academy of Forensic Science.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 8. — Recovered cartoon of António Joaquim Ferreira da Silva in routine chemistry work (A) and a copy of the cover of his work in ptomaines dating from 1917 (B).