Alchemy
Newton devoted much of his time to the study of chemistry, a great number of his experiments still remain in manuscript. His Tabula Quantilatum et Graduum Caloris contains a comparative scale of temperature from that of melting ice to that of a small kitchen fire. He wrote another chemical paper De Natura Acidorum. Sir Isaac spent much time in the study of the alchemists including Jacob Boehme. In an earlier part of his life, Newton and a relation Dr Newton of Grantham had put up furnaces and had wrought for several months in quest of the philosophers tincture. Sir Isaac also studied the manuscripts of Flamsteed's Explication of Hieroglyphic Figures and William Yworth's Processus Mysterii Magnii Magni Philosophicus.
Read more about this topic: Later Life Of Isaac Newton