The big moon was rising over the meadows as we tucked ourselves snugly out of sight in a clump of small cedars on the bank, within easy range of the dam and commanding a view of the whole pond. The domed houses of the muskrats--the village numbered six homes--showed plainly as the moon came up; and when the full flood of light fell on the still surface of the pond, we could see the "roads" of the muskrats, like narrow channels, leading down through the pads to the open space about the dam. [Illustration: "The big moon was rising over the meadows."] A muskrat's domestic life is erratic. Sometimes there will be a large village in the pond, and, again, an autumn will pass without a single new house being built. It may be that some of the old houses will be fitted up anew and occupied; but I have known years when there was not a house in the pond. At no time do all of the muskrats build winter houses. The walls of the meadow ditches just under the dam are honeycombed with subterranean passages, in which many of the muskrats live the year round. Neither food nor weather, so far as I have found, influence them at all in the choice of their winter quarters. In low, wet meadows where there are no ditches, the muskrats, of course, live altogether in mud and reed houses above ground, for the water would flood the ordinary burrow. These structures are placed on the tussocks along a water-hole, so that the dwellers can dive out and escape under water when danger approaches. But here in the tide-meadows, where the ditches are deep, the muskrats rear their families almost wholly in underground rooms. It is only when winter comes, and family ties dissolve, that a few of the more sociable or more adventurous club together, come up to the pond, and while away the cold weather in these haystack lodges. [Illustration: Section of muskrat's house.] These houses are very simple, but entirely adequate. If you will lift the top off an ordinary meadow lodge you will find a single room, with a bed in the middle, and at least one entrance and one exit which are always closed to outsiders by water. The meadow lodge is built thus: The muskrat first chooses a large tussock of sedge that stands well out of the water for his bedstead. Now, from a foundation below the water, thick walls of mud and grass are erected inclosing the tussock; a thatch of excessive thickness is piled on; the channels leading away from the doors are dug out if necessary; a bunch of soaking grass is brought in and made into a bed on the tussock--and the muskrat takes possession. The pond lodges at the head of Lupton's are made after this fashion, only they are much larger, and instead of being raised about, a tussock of sedge, they are built upon, and inclose, a part of a log or stump.