Part 37

Tuff-beds, 94.

Tulip tree, 97.

Ulmus, 92.

Ulodendron, 57.

Underclay, 37.

Unger's list of genera of Eocene epoch, 90.

Upper Chalk, 85.

Upper Greensand, Coniferæ of, 85.

Vaccinium, 96.

Vitis, 96.

Volkmannia, 60.

Voltzia, 78, 79.

Vosgesian period, Brongniart's, 78.

Walchia, 71.

Walnuts, 97.

Wealden, Coniferæ of, 85.

Wealden epoch, flora of, 84.

Widdringtonites, 87.

Williamsonia, 81.

Williamsonieæ, 86.

Willow, 97.

Works, list of, treating of fossil botany, 105.

Yatesia, 86.

Yew, 94.

Zamia, 78.

Zamieæ, 86.

Zamiostrobus, 78.

Zamites, 78, 79, 84, 87.