This article describes the first half century life of the Casa de Ninos Exp
ositos (The Foundlings House of Buenos Aires) established in 1779 and remar
ks the economic and administrative conflicts between secular and religious
orders. Tensions between different levels of the Spanish State and Catholic
Church for its administration were increased up to the total secularizatio
n of the House. Children life conditions and mortality are also analyzed in
the institutional context where wetnurses bred foundlings in each singular
home.