It is my purpose in this thesis to show any influence that Emile Zola's Naturalism had on the novels of Blasco Ibáñez.. Because the novels of the Spanish author contain many suggestions of the Zolaesque theory of Naturalism, many literary critics have assumed that he did obtain much of his inspiration from this source; they have even called him the "Spanish Zola." I shall try to determine how much he imitated Zola's Naturalism, and to show to what extent it is correct to call him the "Spanish Zola."