On 30th April, Davidson and Crommelin arrived at Sobral. When arriving at its destination the astronomers had a warm welcome, previously prepared by Henrique Morize, the director of the Observatory of Rio de Janeiro, that had purposely moved to the Sobral for the purpose. They stayed at the house of Colonel Vicente Saboya, deputy for Sobral, together with the astronomers of the American expedition, who were there to study terrestrial magnetism and atmospheric electricity.
Text by: Ana Simões e Paulo Crawford
Picture: Observatório Nacional do Rio de Janeiro @ http://resenha-on.blogspot.com/2015/12/observatorio-nacional-reune-as-placas.htm