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Materia Medica has also found, in Udoy Chand Dutt, an able exponent. One branch has, however, up till this time, remained entirely neglected—namely, Chemistry. Indeed, it may be assumed that on accont of its complex and technical nature it has hitherto repelled investigators.
The progress of chemical knowledge among the ancient nations has always had a fascination for me. The classical works of Thomson, Hoefer and Kopp have been my favourite companions for the last twelve years and more. In the course of my studies in this field I was naturally led to an inquiry into the exact position which India occupies therein, and with this view I undertook a systematic examination, from the chemical standpoint, of the Charaka, the Susruta and the various standard works of the Ayurvedic and Iatro-chemical Periods, which have escaped the ravages of time. It was at this stage that I was brought into communication with M. Berthelot some five years ago—a circumstance which has proved to be a turning-point, if I may so say, in my career as a student of the history of chemistry. The illustrious French savant, the Doyen of the chemical world, who has done more than any other person to clear up the sources and trace the progress of chemical science in the West, expressed a strong desire to know all
