Paper, 'That plants do really contain iron, and that this metal does necessarily enter into their natural composition' by M [Louis] Lémery, Jr Paper regarding experiments on the presence of iron in plants, in which it is deduced that iron's magnetic properties are somewhat different when the iron is part of a whole plant versus when the plant is burned to ashes. Subject: Chemistry Read to the Royal Society on 5 April 1711. [1711]