I am an electro-magnet of high power, and permanent. I was first created in the year

I am an electro-magnet of high power, and permanent. I was first created in the year 1831, and have since become famous. I have been applied to purposes of soft iron, of high and low permanent steel, and of soft iron kept up to a high permanent power by the agency of permanent steel. I have been made to lift and to move great weights of iron and of steel; to keep up permanent and temporary magnetism in soft iron; and to produce permanent and temporary magnetism in soft iron, up to the highest degree of power. I have been made to serve as a keeper of steam, and as a keeper of horses. I have been made to serve as a keeper of men, and as a keeper of women. I have been made to serve as a keeper of