I am a steam of high pressure, and great power, and am driven easily up to 200 horse-

I am a steam of high pressure, and great power, and am driven easily up to 200 horse-power, but I am not easily increased beyond that. I am generated from water, which is collected from the hands of the community, and from the steam which is set up from it in the manufacturing and commercial pressure of the country. I am collected in an hour, and an hour of power, which is equal to 600 horse-power, is set up from me. I am, however, only an hour of power, and am hunted, with greater or less pressure, from morning to morning, and from week to week. I am, nevertheless, a very cheap power, and am easily generated, from a pressure of 100 lbs. to 200 lbs. per square inch,