Letter, regarding effects of laurel water on dogs from R Porter to Cromwell Mortimer Letter regarding Porter's experiments on the effects of poison water made from laurel leaves on dogs. Mortimer incorporated Porter's results into his paper (manuscript found at CLP/11ii/18). Subject: Chemistry / Pharmacy Published in Philosophical Transactions as part of paper titled 'Some experiments concerning the poisonous quality of the simple water distilled from the Lauro-cerasus, or common laurel, made upon dogs, at Toppingo-Hall in Essex, August the 24th 1731. and others made before the Royal Society in their repository'. Addressed to Mortimer at Sir Hans Sloane's in Great Russell Street near Bloomsbury Square [London]. 11 January 1731