 An analysis of the waters was conducted in Porto, which found that the waters were alkaline and gaseous in nature.Starting in 1885, these waters began to be bottled in a wood shed beside the pipes.Following the death of his father in July 1889, Augusto de Sousa e Castro's heir, António Cândido de Sousa (and Castro Moraes Sarmento) landowners, obtained from the "Ministério das Obras Públicas" ("Ministry of Public Works") a 15 year patent associated with the therapeutic waters of the parishes of Prado and Paderne.