Isthmus, of Darien, [5], [26], [32], [37], [109], [116]
of Panama, [5], [27], [50], [110]
Ixlilxochitl, referred to, [179] (footnote)
Ixtaccihuatl, [144]
Iztatapalan, [195]
J
Jackson, Andrew, [248-250]
Jones, John Paul, [281-297]
William Paul, [290-295]