=Ulmaceæ= =137= Ulman, Paul 15 =Ulmus= =137= =alata= =142=, 144, 299 =americana= =140=, 141, 298, 300 =fulva= =138=, 139, 209 =Thomasi= =142=, 143, 299 =Viburnum prunifolium= =288=, 289, 299 =rufidulum= =289= Walnut 52, 54, 56 black 54, 57, 297, 300 white 54, 55 Williamson, L. A. 103 Williamson, E. B. 103 Willow 36, 38, 40, 300 black 36, 37, 297, 300 crack 40, 42 glaucous 43 peach-leaved 38, 39 pussy 43, 44 swamp 43 white 40, 41 Wood, specific gravity of some species that occur in Indiana 299 Wood, white 159 whittle 257 * * * * * Transcriber's Note Footnote 46 was not indicated in the text and so was assumed to be associated with the text associated with E. J. Hill's account of the species _Celtis pumila_. The last three items in the key on page 36 were renumbered as "4" appeared twice. On page 287, "Dr. Jno. A. Warder" was changed to "Dr. John A. Warder". Formatting of the titles for the sections listed in the Table of Contents was standardized. Hyphenation and æ ligature use was standardized. The [oe] ligature was converted to oe. Small captioned text was NOT converted to UPPER CASE as that is used in the text for the Family Headers.