Besides, worms are essentially useful in draining our lands from superfluous moisture, which in many cases, without their agency, would be detained upon or near the surface of the earth, chilling and deteriorating our pastures. A few inches of soil, resting upon a substratum of clay, would commonly, without some natural or artificial drainage, be soaked with water after heavy rains, and thus become a bog, or produce coarse water herbage rather than good grasses; but these worms greatly facilitate the passage of the water by draining horizontally along the bed of clay, and aid the emission of the water by this means, as I have often observed in the trenches, which we cut in our retentive soils, numerous worm-casts on their sides a few days after they had been made, being the exits of the horizontal runs, and through these the water drains into the trenches, and runs off. I do not assert the water would not in any case be discharged without the agency of worms; but that the passages which they make expedite it, which, in situations where the operation would be subjected to delay from the position of the ground, or the under stratum, is of infinite advantage. Thus the soil is not only rendered firm, allowing the admission of cattle, but the good herbage, which the long residence of water would vitiate or destroy, is saved from injury, and the aquatic and useless plants starved or checked in their growth; but after great gluts of rain, when the supply of water is greater than can be speedily carried off, it becomes stagnant, and those worms, which cannot burrow beyond its influence, soon perish, and we lose the benefit of these very beneficial creatures. Drainage is therefore one of the most important operations in our agricultural concerns. As by irrigation we turn a quantity of nutritive water over our lands, or by reason of its higher temperature foster the growth of grasses; so, by draining cold and superfluous moisture off, we promote the growth of valuable vegetation. I would advocate the cause of all creatures, had I the privilege of knowing the excellency of them; not willingly assigning vague and fanciful claims to excite wonder, or manifest a base pride by any vaunt of superior observation; but when we see, blind as we are, that all things are formed in justice, mercy, truth, I would tell my tale as a man, glorying as a Christian, and bless the gracious power that permitted me to obtain this knowledge.