[53] Higley and Raddin: Flora of Cook County Illinois and a part of Lake County Indiana. Bul. Chic. Acad. Sci. Vol. 2:33:1891. [54] Trans. Ill. Acad. Science, 1916:132. [55] Amer. Nat. 6:660:1872. [56] Rept. Ind. Geol. Surv. 12:208:1883. [57] Ind. Geol. Rept. 16:169:1889. [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. [68] Bot. Gaz. Vol. 67:241-242:1919. [69] Rhodora Vol. 14:192:1912. [70] Sterrett: Utilization of Ash. U. S. Dept. Agri. Bul. 523:1917. [71] Sterrett: Utilization of Ash, U. S. Dept. Agri. Bul. 523:1917. [72] Proc. Ind. Acad. Sci. 1900:141:1901. [73] Manual Public Schools Clark County, Ind. 1878-9, page 62. [74] Proc. Ind. Acad. Sci. 1917:403:1918. [75] Rept. Geol. Surv. Ind. 7:562:1876. [76] Rept. Geol. Surv. Ind. 16:168:1889. [77] Rept. Geol. Surv. Ind. 24:617:1900. [78] Sci. Bul. Chic. Acad. Vol. 2:148:1891. [79] Ind. Geol. Rept. 11:148:1881. [80] Blatchley's, Mss. Flora of Monroe County, Ind. June 1887. [81] Bul. Brockville Nat. Hist. Soc. No. 1:38:1885 [82] Amer. Midland Nat. Vol. 3:222:1914. [83] It is said that this list and that of Hobb's list of trees of Parke county were prepared by obtaining from farmers a list of the common names of the trees to which they attached botanical names. [84] Sargent in a letter to the author. [85] Proc. U.S. Nat. Mus. 17:415. [86] American Midland Naturalist 3:320:1914. [87] Ind. Geol. Rept. 11:148:1881. [88] Ind. Geol. Rept. 11:123:1882. [89] Ind. Geol. Rept. 12:174:1883. [90] Adapted from Sargent's "Trees of North America." INDEX The accepted botanical names are in bold-face type. Synonyms are placed in italics. Where the subject receives the most extended notice the page number is in bold-face type. Page