[58] Plant World 7:252:1904.
[59] Thomas' Western Travels, page 111:1819.
[60] Drake in Picture of Cincinnati, page 83, 1815.
[61] Bot. Gaz. Vol. 67:233:1919.
[62] S. Coulter: Size of some trees of Jefferson County, Ind. Bot. Gaz. Vol. 1:10:1875. He says: "Fifty trees were measured at three feet above the ground with an average diameter of 2 ft. and 9 inches. An equal number of Æsculus octandra were measured at the same height from the ground with an average diameter of 2 ft. and 9 inches."
[63] Drake: Picture of Cincinnatus:79:1815.
[64] Young: Botany of Jefferson County, Ind. Geo. Surv. Ind. Rept. 2:255:1871.
[65] Sargent: Notes on North American Trees. Bot. Gaz. Vol. 66:421-438 and 494-511:1918.
[66] Wadmond: Flora of Racine and Kenosha Counties. Trans. Wis. Acad. Sci. Vol. 16:857:1909. The author says: "Two trees near Berryville, the only known trees of this species in the State."
[67] In 1918 I measured a specimen near Yankeetown in Warrick County that had a clear bole of 3 meters (10 feet), and a circumference of 11 dm. (40 inches) b.h.