A closer analogy than this, however, exists between these human individuals and the eunuchs of Oriental civilization. Except the secretary of the treasury, in the cabinet of Candace, queen of Ethiopia, who was baptized by Philip and Narses, Justinian's general, none of that class have made any impression on the world's life, that history has recorded. It may be reasonably doubted if arrested development of the female reproductive system, producing a class of agenes,[16] not epicenes, will yield a better result of intellectual and moral power in the nineteenth century, than the analogous class of Orientals exhibited. Clinical illustrations of this type of arrested growth might be given, but my pen refuses the ungracious task. Another result of the present methods of educating girls, and one different from any of the preceding, remains to be noticed. Schools and colleges, as we have seen, require girls to work their brains with full force and sustained power, at the time when their organization periodically requires a portion of their force for the performance of a periodical function, and a portion of their power for the building up of a peculiar, complicated, and important mechanism,--the engine within an engine. They are required to do two things equally well at the same time. They are urged to meditate a lesson and drive a machine simultaneously, and to do them both with all their force. Their organizations are expected to make good sound brains and nerves by working over the humanities, the sciences, and the arts, and, at the same time, to make good sound reproductive apparatuses, not only without any especial attention to the latter, but while all available force is withdrawn from the latter and sent to the former. It is not materialism to say, that, as the brain is, so will thought be. Without discussing the French physiologist's dictum, that the brain secretes thought as the liver does bile, we may be sure, that without brain there will be no thought. The quality of the latter depends on the quality of the former. The metamorphoses of brain manifest, measure, limit, enrich, and color thought. Brain tissue, including both quantity and quality, correlates mental power. The brain is manufactured from the blood; its quantity and quality are determined by the quantity and quality of its blood supply. Blood is made from food; but it may be lost by careless hemorrhage, or poisoned by deficient elimination. When frequently and largely lost or poisoned, as I have too frequent occasion to know it often is, it becomes impoverished,--anemic. Then the brain suffers, and mental power is lost. The steps are few and direct, from frequent loss of blood, impoverished blood, and abnormal brain and nerve metamorphosis, to loss of mental force and nerve disease. Ignorance or carelessness leads to anemic blood, and that to an anemic mind. As the blood, so the brain; as the brain, so the mind.