the Thoreau Log. 31 May 1859. Concord, Mass. Thoreau writes in his journal: Small black flies or millers over river, with long feelers, flying low in swarms now (Journal, 12:196). Log Index Log Pages Select... 1817-1832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862