Harvard University Press, 1924. — 411 p.
The history of European science in the Middle Ages is twofold. On the one hand it is concerned with the recovery and assimilation of the science of antiquity, little known at first and only gradually brought into the West, to some extent as enlarged by the Arabs, in the course of the twelfth and thirteenth centuries; While on the other hand, it has to take account of the advance of knowledge, by the processes of observation and experiment in western Europe. The first phase deals primarily With translation from the Arabic and the Greek, in Spain, Sicily, North Africa, and the East, as a preliminary to the full assimilation of these successive increments of ancient learning and the Arabic additions thereto. The second more obscure, has to trace the extension of knowledge by such means as the observation of plants and animals, especially dogs, hawks, and horses, the actual treatment of disease, geographical exploration, and the growth of the experimental habit. On both these sides a consecutive and comprehensive history still remains to be written, While at many points monographic investigation is entirely lacking.