_Nesting._--On May 7, 1911, Samuel F. Rathbun took us over to Mercer Island in Lake Washington. At that time, this interesting island was heavily forested in some places with a virgin growth of tall firs, in which we saw the sooty grouse and heard it hooting, later finding its nest in an open clearing. While walking through another open space among some scattered groups of small fir trees, Mr. Beck flushed a lutescent warbler from her nest in a hummock covered with the tangled fronds of dead brakes (_Pteridium aquilinum_). The nest was so well concealed in the mass of dead ferns that we had difficulty in finding it. It was made of dead grasses and leaves, deeply imbedded in the moss of the hummock, and was lined with finer grasses and hairs. It held four fresh eggs. Three days later, Dr. Wetmore took a set of five fresh eggs at Redmond. This nest was located beside a woodland path at the edge of a swamp; it was well hidden on the ground, under a stick that was leaning against a log. It was made of similar materials and was lined with white horsehair. Mr. Rathbun mentions three nests (MS.), found in that same vicinity; one was well hidden under some fallen dead brakes; and the other two were beautifully concealed in the centers of small huckleberry bushes. William L. Finley (1904b) records six Oregon nests. The first "was tucked up under some dry ferns in the bank of a little hollow where a tree had been uprooted. * * * The second nest was on a hillside under a fir tree, placed on the ground in a tangle of grass and briar." Another was "in a sloping bank just beside a woodland path. A fourth nest was tucked under the overhanging grasses and leaves in an old railroad cut." He found two nests in bushes above ground. He saw a female carrying "food into the thick foliage of an arrow-wood bush. A cluster of twigs often sprouts out near the upper end of the branch and here, in the fall, the leaves collect in a thick bunch. In one of these bunches, 3 feet from the ground, the warbler had tunneled out the dry leaves and snugly fitted in her nest making a dark and well-protected home." He found another nest 2 feet up in a bush, within a few yards of the ocean beach. Henry W. Carriger, of Sonoma, Calif., (1899) mentions two more elevated nests of the lutescent warbler. He writes: