British Library MS. Sloane 3643. Paper. Folio. 92 folios. 17th Century. Bound with the last number. 1. Excerpts from various Chymical and Alchymical Authors. ff.1-13. 2. A warning to the false Chymists or the Philosophical Alphabet by Thomas Rawlin. ff.14-55. Printed in quarto, London, 1616. 3. Fragment of the above treatise. ff.56-92.