2799 William Y-WORTH. Chymicus rationalis: or, the fundamental grounds of the chymical art rationally stated and demonstrated, by various examples in distillation, rectification and exaltation of vin or spirits, tinctures... and oleosums... In which is contained, a philosophical description of the astrum lunare microcosmicum, or phospheros... 8� London: for T. Salusbury 1692 Ferguson British Library Wisconsin