nUR science of hygiene represents the sum of the knowledge, directly 0 serviceable for the struggle of existence, which has been acquired up to the present day. To make national life complete and vigorous tltis knowledge ought, more than any other, to be the common property of the whole people. Such is not hy any means the case. The public and the leaders of the public are in general ignorant or indifferent. Education has been at fault. What teaching of hygiene and physiology has been given in

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... chools so far has borne comparatively little fruit.