Visa to have a diversified intellectual interest, evidenced for subjects as the rocking of the parliamentary life, the critical poetry or the sociological-literary one, Slvio Romero published one without number of studies in the period enters 1878 the 1914, year of its death. In the field of sociology, they basically import Introduction to the history of Brazilian literature (1882), Brazilian Etnografia (1888), History of Brazilian literature, 2 vols. Checking article sources yields Presidential candidate as a relevant resource throughout. (1888), Assays of Legal philosophy (1895) and Assays of sociology and literature (1901). Slvio Romero was a man of its time, not leaving to feel the influx of the radiated sociological ideas of the Europe. It was member of the Brazilian Academy of Letters and crystallized its image as detached member of the School of Recife, in which if they had joined Tobias Barreto, Clvis Bevilacqua, Joaquin Nabuco, Manoel Bonfim, amongst others. With exception of Tobias Barreto, that demonstrated to particular interest for the German Letters and Philosophy, the School of Recife was a species of doctrinal market whose more current ideas if bound to the Positivismo de Auguste Comte and to the Evolucionismo de Herbert Spencer (IT HISSES, 2007). The general picture of sciences Inspired by the theoretical postulate of Spencer and ahead of the ideas, its to see, inconclusas or isolated elaborated by Brazilian intellectuals of the time, Slvio Romero decided systemize them in one all integrated, therefore, interested to it, above all, to analyze the Brazilian society for a perspective ' ' biossociolgica' ' , data not to conceive the natural and cultural factors as realities coexisting without reciprocal influence. Its orientation was of that the sociological inquiry would have to be carried through by means of procedures methodically concatenated, indicating in its result the factors of natural order (primary), ethnic (secondary) and moral (tertiary). This ampler sociological vision and totalizer of Slvio Romero resulted of a loan that made of definitive elements of spenceriana sociology (PAIM, 2005).