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nydus/A Short History of the WorldPublic
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Table of Contents

LVII THE DEVELOPMENT OF MATERIAL KNOWLEDGE

in a few years’ time be accomplished in that same period of eight days.

AN EARLY WEAVING MACHINE
AN EARLY WEAVING MACHINE From an engraving by W. Hincks in the British Museum

Too much stress must not be laid upon these striking reductions in the time distances of one place from another. They are merely one aspect of a much profounder and more momentous enlargement of human possibility. The science of agriculture and agricultural chemistry, for instance, made quite parallel advances during the nineteenth century. Men learnt so to fertilize the soil as to produce quadruple and quintuple the crops got from the same area in the seventeenth century. There was a still more extraordinary advance in medical science; the average duration of life rose, the daily efficiency increased, the waste of life through ill-health diminished.

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