No one can say they are apetalous or monosepalous or sporangiferous or call them other hard names in Latin having reference to their flowering or fruiting for we may not say that they flower or fruit at all. These minutest Lemnas give us no sign of stamin or spore, of carpel or indusium, yet they multiply by millions and cover the surface of the spring pools whence they depart constantly with the outflowing current, voyaging gayly down Brobdingnagian rapids to the sea. The time of year when it is winter in the sky above and on the bank a few feet up the hillside, when all green life except that which grows with its roots in this magic water from the deep caves of earth is either killed or suspended, seems to be their time for growth. They grow a little, to a certain stage when perhaps a plant covers surface to the size of a pinhead and a half, then split and become independent plants with a tiny root hair apiece. Brave equipment this for facing the January gales and frost of a northern winter. Yet they sail forth from the home pool as confidently as liners from the home port and rollick all along down the stream, making harbor in every tiny bay and collecting a fleet in each eddy. What potency of perpetual spring they sow as they traverse all the ways that wind in and about the levels below the fountain head we do not know, any more than we know what elixir vitæ dwells in the waters on which they are borne, yet something makes the region the lotus land of creatures of the wild where they linger on unmindful of their vanished kindred. Out of the rich vegetable mould of ages, in the cool, moist shadows grow the rarer New England orchids in the summer, and the rarer migrant birds of our summer woods find asylum here for their nests and young. In the winter the ruffed grouse comes here to drink, finds gravel for his crop always bare and unfrozen on the hillside where the first seepings of water come forth, and no doubt gets an agreeable change of food in the succulent green things of the shallows. Several of these birds cling to the place, nor can I drive them away by simply flushing them. They circle and come back to the brook margin or its immediate neighborhood every time. Where the swamp maples have grown large on the bank and lifted the soil with their roots high enough to form miniature dry islands the mink have built their burrows and thence they go forth to hunt the region all about, but especially [Illustration: You may get a glimpse of the weasel-like head of one lifted above the bank as he sniffs the breeze for game and enemies]