Certainly no more beautiful nests in shape exist than the spherical in form. The Long-billed Marsh Wren builds a nest of this type. Upon its arrival in the spring it seeks the inland swamps, or the brackish marshes of the sea-shore, where, amid the splatterdocks of the former and reeds of the latter, it finds suitable shelter and protection. There, day in and day out, during its entire summer stay, it pursues the even tenor of its life, happy and contented, never caring, like many of its remoter kin, for the charmed circle of man. Active, energetic and buoyant with hope, it skips about the tall rank herbage, in every direction, in quest of insects, making its presence known and felt by the lively chattering song, which resembles more nearly the sounds of an insect than those of a bird, which emanates from its grassy haunts. As these birds reach their breeding-grounds early in May, nest-building is soon begun, but so secret and mysterious are their movements at first, that we hardly know anything of their presence, except when they are colonized for the summer. The labor of building is entered into with considerable alacrity, and is mainly the result of the combined labor of both birds. Their nests are usually placed in low bushes, a few feet above the ground, or woven into the tops of sedges out of the reach of ordinary tides; but in very rare instances upon the ground in the midst of a clump of grasses. Ground nests are loosely-constructed affairs, which is not the case with those that are elevated to the tops of tussocks, or to the branches of shrubs and trees, which require more compactness and a better finish. The most beautiful, as well as artistic, nest which I have ever seen is the one shown in the cut. This nest was discovered in the vicinity of Philadelphia in the summer of 1878. A willow-branch, some fifteen feet above the ground, which was bifurcated, was made to do service. No ordinary skill was that which surmounted the seemingly insuperable difficulty of building a nest, not pensile in character, to such a swaying branch. That the birds accomplished the feat the nest itself was the evidence. In form this nest was nearly globular, four and a half and five inches in the two diameters. It was woven of the broad leaves of a species of scirpus, closely and evenly, and had its interstices well seamed with brownish cottony down. A thin delicate curtain of gauze, of the same material, hung around the opening, and this was continued within, forming a thick bedding of the softest, fluffiest nature, of which the most voluptuous sybarite might envy its fortunate possessor. [Illustration: LONG-BILLED MARSH WRENS. Nest Placed Out of the Reach of Tides.]