Achras sapota. Acoyapo. Acrocinus longimanus. Adiantum. Aguardiente. Aguasco, R. Ahuacatl. Airey, Sir George. Alligators. Alloy. Alluvial deposits, gold. Amalgam. Amalgamation process. America, western side of tropical, food of people. American race, derivation of. Amerrique range, the. Ampullari. Amusements, Nicaraguan. Ancylus. Andagoya, Pascual de. his account of Nicaragua. on chicha-drinking. Aneimea hirsuta. oblongifolia. Angelot, M. on fused rock. Angraecum sesquipedale. Anolis. Antigonon leptopus. Antiquities. Indian. Antonio, San, lode. Antonio, San, Valley. Ants. Ants, army. assisting each other. attending leaf hoppers. attending scale insects. ant bridge. communicate by scent. cows. foraging. hunting. inhabiting bullshorn thorn. leaf cutters. reason in. sagacity of. stinging. thrushes. Apanas. Aphidae. Armadillos. Arrastres. Articulata. Artificial selection. Artigua, R. Arum. Asses. Ateles. Atlantis. Auriferous quartz. veins of, in Queensland. Australia. hot winds in. wasps in. whirlwinds in. Avila, Gil Gonzales de. Avocado. trees. Axes. ancient Mexican. stone. Aztecs. Baldwin, Mr. J.D. Bamboo thickets. Bananas. Baptism, a pre-christian rite. Bates, Mr. H.W. on instinct in wasps. on life under the equator. on the Longicorn Coleoptera of Chontales. on mimetic forms. on mimetic resemblances. on social birds. on wings of Morphos. Bats. Beak of birds. Bees. Beetles. habits of. the harlequin. killing bug. on Pena Blanca. tiger. Begonias. Benito, San. lode. Bermudez, Don Dolores. Birds. accompanying an army of ants. fertilising flowers. nests. rejecting Heliconii. Bittern. Bland, Mr., on the distribution of land shells in the West Indies. Blewfields, R. Boulder clay. Boundary question between Nicaragua and Costa Rica. Bourbourg, Brasseur de, Abbe, on the Teo Amoxtli. Brazil, migratory butterflies of. Breadfruits. Bromelia. Bruce, on whirlwinds in Africa. Buccaneers. Bugs. injecting poisonous fluid. Bullock, Mr. W., on the use of rattles in Mexico. Bull's-horn thorn. wasps attending glands of. Bungos. Buprestidae. Burial customs of the ancient Indians. Butterflies. instinct of. migrations of. in Rio Plata. in Patagonia. Mr. Darwin on. Mr. R. Spruce on. Cabbage. Cacao. Cactuses. tree. Californian pitcher-plant. Callidryas. Calliste larvata. laviniae. Calopteron basilis. vicinum. Canal, interoceanic. Candelera, El. Candolle, Alphonse de, on fresh-water productions. Canis caraibicus (Lesson). ingae (Tschudi). Capsicums. Captive Indians. Carabidae. Carbolic acid. Carca Indians. R. Caribbean Sea, carving on rocks on the banks. Caribs. food of the. Carlos, San. R. Carrots. Castillo. capture of by Nelson. Castilloa elastica. Caterpillars.