The rotatory motion in them all is produced by an apparatus that exists not only in all animals, but in plants also, and is a most important agent in sustaining the freshness and vitality of their circulating fluids and of the surrounding medium in which they live.

If by this policy we can ultimately witness the suppression of all bank bills below $20, it is apparent that gold and silver will take their place and become the principal circulating medium in the common business of the farmers and mechanics of the country.

Separate circulating pumps, usually centrifugal, are now freely used, and the addition of a special pump for lifting the condensed water presents no difficulty whatever.