Columbus, however, reported that on Oct. 11, 1492, the Indians of Guanahani brought parrots and cotton thread in balls, to trade for beads and hawks' bills. Either he told the truth, or he did not. If he told the truth, it is still remarkable that the Indians should not only have known of the traders' demand for cotton and parrots, but should also have offered the very articles which Cada Mosto, nearly fifty years earlier, had mentioned as coming from Africa, particularly the cotton, then offered for sale in the Negro markets. Columbus's references to growing cotton are specific in declaring that the cotton grew on trees,--hence it is obvious that he did not see any true cotton growing, but only the false cotton, the product of the tree Bombax Ceiba, used for stuffing mats, but not capable of being spun (page 28). A study of the early records of Mexico is conclusive in the evidence it furnishes to show that cotton never formed part of the tribute due the Mexican emperor, but that the payment of tribute in cotton was "an innovation of the Spaniards, and did not have the sanction of the Aztec tribute" (page 56). Hence we have nothing to indicate that, either in the Indies or in Mexico, the material of which the "cotton clothing" of the natives, mentioned by the Spaniards, was made, was really cotton. If it was cotton, its presence points to contact between America and Africa before Columbus, and the readiness of the natives to offer cotton in exchange for hawks' bills testifies clearly to the extent of trade relations between the two countries.