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 such an addition to our materia medica; but there is always a history or a tradition behind our acquaintance with the new medicine, going back to an undetermined past.

In modern dispensatories the ever increasing accumulation of chemical, botanical, histological, and therapeutic notes has tended to crowd out the historic paragraphs which brightened the older treatises. Perhaps this result is inevitable, but it is none the less to be regretted on account of both the student and the adept in the art of pharmacy. "I have always thought," wrote Ferdinand Hoefer in the Introduction to his still valuable "History of Chemistry" (1842), "that the best method of popularising scientific studies, generally so little attractive, consists in presenting, as in a panorama, the different phases a science has passed through from its origin to its present condition." No science nor, indeed, any single item of knowledge, can be properly appreciated apart from the records of its evolution; and it is as important to be acquainted with the errors and misleading theories which have prevailed in regard to it, as with the steps by which real progress has been made.

The history of drugs, investigations into their cultivation, their commerce, their constitution, and their therapeutic effects, have been dealt with by physicians and pharmacologists of the highest eminence in both past and recent times. In Flückiger and Hanbury's "Pharmacographia" (Macmillan: 1874), earlier records were studied with the most scrupulous care, and valuable new information acquired by personal observation was presented. No other work of a similar character was so original, so accurate, or so attractive as this. A very important systematic study of drugs, profusely illustrated by