. Annals of medical history. burning glasses,globes, etc., to be found in the classicalwriters. He then traces the history of opticsthrough the works of Euclid and otherGreeks to the Arabians, thence to RogerBacon, whose optical studies were truly re-markable. Spectacles were surely invented inthe 13th century but by whom is somewhatin doubt. The omniscient Leonardo da Vincirepresents according to Singer the turning-point between medieval and modern optics. The two succeeding articles: Hypo-thesis by Schiller, and Science and Meta-physics by Jenkinson, though most inter-esting and thoughtful s


. Annals of medical history. burning glasses,globes, etc., to be found in the classicalwriters. He then traces the history of opticsthrough the works of Euclid and otherGreeks to the Arabians, thence to RogerBacon, whose optical studies were truly re-markable. Spectacles were surely invented inthe 13th century but by whom is somewhatin doubt. The omniscient Leonardo da Vincirepresents according to Singer the turning-point between medieval and modern optics. The two succeeding articles: Hypo-thesis by Schiller, and Science and Meta-physics by Jenkinson, though most inter-esting and thoughtful studies do not callfor particular notice in a journal devoted tomedical history, nor does Childs Archi-medes Principle of the Balance and Criti-cisms upon It, nor, though most fascinat-ing to the botanist, Arbers last article, Piatts Aristotle on theHeart is a valuable exposition of Aris-totles text on that organ and an attemptto explain some apparent inconsistenciesin the usual interpretations thereof. 0 0 /. Volume III Winter 1921 Number 4 TAOIST IDEAS OF HUMAN ANATOMYE. V. COWDRY, * PEKING, CHINA


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