Rennes MS. 162. 235 folios, plus a preliminary folio A. Paper. 208x163mm. 17th Century. f15-102 Traitté de chymie soubz monsieur de Clave, et commencé ce quatorziesme jour de mars mil six cents trente. [The other folios at the beginning and end of the manuscript contain various recipes against diverse illnesses, with descriptions of pharmaceutical substances.]