The Architect and myself decided to travel once again, later in the season, to the mountain, in the hope that we might make a better nesting record. We reached the cabin on June 17th, and again found ourselves back in spring. The peepers were still calling, and there were wild lilies-of-the-valley in the woods, and pink rose-hearted twin-flowers, with their scent of heliotrope. Everywhere grew the dwarf cornel, or bunch-berry, with its four white petals--the smallest of the dogwoods, which grows only a few inches high. The first nest was found by me. It was built on a foundation of tiny twigs in a bush, and had a two-story effect, the upper story being made of fine grass. As I came near the bush, a magnificent chestnut-sided warbler, with the bay patches on his sides and his yellow crown, made such an outcry that I suspected the nest and finally found it. There were three eggs in it and one tiny young bird, smaller than a bumblebee. Everywhere grew the beautiful northern azalea, of a clear pink with a perfume like sandal-wood. The Canadian warbler, with its black necklace on its yellow breast, sang everywhere a song which sounded like, "Ea-sy, ea-sy, you, you"; and we heard also the orange-throated Blackburnian warbler's wiry, thin notes. Near the top of the mountain are two sphagnum bogs, difficult to find, but the home of many a rare bird. We finally located the larger of these bogs, and there the Artist made the great discovery of the day. Right out from underneath his foot, as he splashed through the wet moss, flew a yellow-bellied flycatcher, which gives a note like the wood-pewee and whose nest had been found only once before in the state of Pennsylvania. Right in front of him, hidden in the deep moss, was this long-sought nest. It was set deep in club-moss and lined with white pine-needles, and contained four pinkish-white eggs with an aureole around the larger end, with light rufous markings. It was so overshadowed with wintergreen leaves and aronia and bunch-berries that, even after the Artist had pointed out the place to me, it was with very great difficulty that I found it.