Constantinople became the centre of learning for Greek music, and the fine soprano solos which now form the attraction of many of our modern churches were sung by the eunuchs. Eunuchs were not only the chief singers, but they cultivated the art into a science, and Constantinople furnished through this class the music-teachers for the world, as we learn that in 1137 the eunuch Manuel and two other singers of his order established a school of music and singing in Smolensk, Russia. There is no doubt but that in a moral sense, considering that women are generally the pupils, this was a most meet and an appropriate arrangement; for, as St. Alphonsus M. Liquori observed, man was a fool to allow his daughters or female wards to be taught letters by a man, even if that man were a saint, and, as real saints were not to be found outside of heaven, it can well be imagined how much more dangerous it might be to have them taught music and singing by a man not a eunuch,--elements which have a recognized special aphrodisiac virtue, as was well known to the ancient Greeks, who only allowed their wives to listen to a certain form of music when they (the husbands) were absent from home. There is not much room for doubt but that both morality and medicine have too much neglected the study and contemplation of the natural history of man, and relied altogether too much on the efficacy of church regulations and castor-oil and rhubarb. There are other things to be done besides simply framing moral codes and pouring down mandrake into the stomach; the old conjoined service of priest and doctor should never have been discontinued, as, by dividing duties that are inseparable, much harm has resulted. Herein dwelt the great benefit of the early practice of medicine among the Greeks, and to the physical understanding and supervision of human nature by the Hebraic law may be said that the creed owes its greatness and stability, and the Hebrew race its sturdy stamina. The wisdom of the Mosaic laws is something that always challenges admiration, the secret being that it did not separate the moral from the physical nature of man. Bain, Maudsley, Spencer, Haeckle, Buckle, Draper, and all our leading sociologists base all their arguments on the intimate relations that exist between the physical surrounding and the physical condition of man and his morality. Churches foolishly ignore all this.