"To some she is the goddess great; To some the milch-cow of the field; Their business is to calculate The butter she will yield." Our highest admiration must be for the discoverers; but we may do well to remind ourselves, from time to time, that to such men we are indebted not only for thrilling insight into the beautiful mysteries of nature, and for the withdrawal of the veil which shuts out from ordinary sight the august magnificences of nature, but also for the discovery of those principles which can be turned to the best practical account, ministering to us in our kitchens and bed-chambers and drawing-rooms and factories and shops and fields, filling our nights with brilliancy and our days with potencies, giving to each man the capability of accomplishing in one year what his ancestors, who lived in unscientific ages, could not have achieved in twenty; not only exhibiting the forces of nature as steeds, but also showing how they may be harnessed to the chariots of civilization. To keep us in healthful gratitude to the men who, having turned away from the marts of the money-makers, have unselfishly set themselves to discover what will enrich the money-makers, and, content to live in simple sorts of ways, have sent down beauty and comfort into the homes of rich and poor, it is well to make an occasional _résumé_ of the results of the work of useful scientists, and ponder the lessons of their single-mindedness. FARADAY. Few names on the roll of the worthies of science are better known through all the world than that of Michael Faraday, who was born in England in 1791 and died in 1867. Rising from poverty, he became assistant to Sir Humphrey Davy, in the Royal Institution, London, where he soon exhibited great ability as an experimenter, and a rare genius for discovering the secret relation of distant phenomena to one another, which gave him his skill as a discoverer, so that he came to be regarded, according to Professor Tyndall, "the prince of the physical investigators of the present age," "the greatest experimental philosopher the world has ever seen."