Bombax.
Bonpland, M.: intrepidity of. tree dedicated to (Bonplandia trifoliata).
Boracha, island of.
Borachita, island of.
Botany: descriptive. of the Canary islands. of the Coral islands.
Bougainville, dissemination of the sugar cane by.
Bovadillo, expedition of.
Branco river.
Brazil: boundaries of. extent of. population of. mountains of. frontiers of. gold of.
Brazil-nut trees (Bertholletia excelsa): nut, harvest of.