On 23 July they set off again longing to reach home, but FitzRoy wanted to ensure the accuracy of his longitude measurements and so took the ship across the Atlantic back to Bahia in Brazil to take check readings.
O 23 de xullo levaron áncoras outra vez, anceiando chegar a casa, pero FitzRoy quería asegurar a exactitude das medidas de lonxitude e así dirixiu o barco á outra beira do Atlántico regresando a Baía en Brasil para volver a comprobar as lecturas.