British Library MS. Sloane 1873. Paper. Quarto. 85 folios. 16th Century. The poem of Thomas Norton, intitled The Ordinall of Alchymy. ff.2-84. Printed in the Theatrum Chymicum, by Ashmole. At the end are eight lines entitled 'Gualteri Haddonis carmen in laudem Thomae Nortoni.' Begins: 'Maximus ingenio scribendi maximus arte.'