Robin Roost Aug. 4-1875 Aug. 4 Clear and warm. We are now fairly into the dog days. The weather is not so speedingly hot, as oppressively sticky. It usually came once or twice each day - showers that fail to cool the air but leave it sometimes even more [illegible] unbearable than before, and everything fairly cleaning. The cicada is now in full blast and the crickets are tuning up already for the grand Sept. Chorus. A few birds have come down from the N. and some of ours have departed. Hummingbirds are getting very abundant and an undoubtedly N. Birds as very few bred thus this season: I see them frequently in the B swamps, and Meynard has shot a dozen or so in a bed of flocks at this place. The flock of the bobolink, now collected in autumnal flocks, I hear away right and also the faint leap of an occasional warbler both this Roost went up to "Block is" late in the P.M. and stayed till dark, watching the flight of birds into the marsh swamp where they have for years roosted. For the space of two hours then was a steady stream pouring in from all directions and distances. At 6 P.M. the flight commenced, Rails, Owens Aeg. Phoenicus, and Notothus Jacoris coming in flocks of from 50 to 200. At 7 P.M. then these species ceased flying and the robins commenced, and continued till it was nearly too dark to distinguish the forms against the sky. A few swallows (H. horreorum et riparia) also flew in and went to roost among the others. I calculated