the Thoreau Log. 26 September 1858. Concord, Mass. Thoreau writes in his journal: Another smart frost, making dry walking amid the stiffened grass in the morning. The purple grass (Eragrostis pectinacea)done. Perhaps the first smart frost finished its purple . . . (Journal, 11:181-182). Log Index Log Pages Select... 1817-1832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862