Hear warbling vireos still, in the elms.

September 20. 

The river probably reaches its highest since June to-day. 

The Maryland yellow-throat is here. Hear warbling vireos still, in the elms. 

Miss Pratt shows me a small luminous bug found on the earth floor of their shed (I think a month ago). Had two bright points in its tail, as bright or brighter than the glow-worm. 

Vide it in paper. It is now dried, three eighths of an inch long by somewhat more than one eighth wide, ovate-oblong with a broad and blunt head, dull straw-color, clear rose—red on the sides, composed of many segments, which give it a dentate appearance on the edges. A broad flattish kind of shield in front, also red and straw-color.

H. D. Thoreau, Journal, September 20, 1858

The Maryland yellow-throat is here. See August 22, 1856 ("The faint warbling I hear nowadays is from apparently the young Maryland yellow- throats, as it were practicing against another spring, — half-finished strains. ")

Hear warbling vireos still, in the elms. See August 25, 1858 ("The note of a warbling vireo sounds very rare");  September 6, 1858 ("Hear a warbling vireo, sounding very rare and rather imperfect.); September 13, 1858 ("Hear many warbling vireos these mornings"

Miss Pratt shows me a small luminous bug. Compare June 25, 1852 ("Nature loves variety in all things, and so she adds glow-worms to fireflies. . ."); June 15, 1856 ("A Miss Martha Le Barron describes to me a phosphorescence on the beach at night in Narragansett Bay. They wrote their names with some minute creatures on the sand."}; September 16, 1857 (“Watson gave me three glow-worms which he found by the roadside in Lincoln last night. They exhibit a greenish light, only under the caudal extremity, and intermittingly, or at will. As often as I touch one in a dark morning, it stretches and shows its light for a moment, only under the last segment.”);