on the Florida shell heaps, [393];

on the St. John River, [393].

Wyman, W. H., on Quaritch, [xvi];

Bibliog. of Printing, [xvi].

Wynne, Private Libraries of N. Y., [x], [xviii].

Wyoming Hist. and Geol. Soc., [438].

Xahila, F. E. A., [167].

Xenophanes, [6].

Xeres, on Peru, [xxxvii].

Xibalba, [134]; held to be Palenqué, [135];