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SEX IX EDÜCAT10X.

and laboratory of repair. If a childs brain- work and sleep are normally proportioned to each other, each night will more than make good each days loss. Clear heads will greet each welcome morn. But if the reverse occurs, the night will not repair the day; and aching heads will signalize the advance of neuralgia, tubercle, and disease. So Nature punishes disobedience.

It is apparent, from these physiological considerations, that, in order to give girls a fair chance in education, four conditions at least must be observed: first, a sufficient supply of appropriate nutriment; secondly, a normal management of the catamenial func­tions, including the building of the reproduc­tive apparatus; thirdly, mental and physical work so apportioned, that repair shall exceed waste, and a margin be left for general and sexual development; and fourthly, sufficient sleep. Evidence of the results brought about by a disregard of these conditions will next be given.