Jurist, sociologist and Argentine historian born in Buenos Aires on January 24, 1847 and died in the same town on March 16, 1893.
Belonging to a family of landowners in the Argentine capital, he studied at the Colegio Nacional and graduated as a lawyer at the Law Faculty of Buenos Aires with Lucio Vicente López, in which he published a thesis on the nature of the contract and the Bill of Exchange in 1873. He served as judge of the crime in the province of Buenos Aires and the capital federal from 1877 until he retired from the judiciary in 1884.
He began to devote himself then advocacy and policy. He was part of a group of lawyers who introduced the application of the new theories of positivism, based on studies of Italian Cesare Lombroso(1835-1909), in the Argentine criminal law; These theories raised the possibility of recognizing a criminal by certain physical characteristics such as the shape of the lips or the head. Some of his works in this field are the prologue which wrote to the men of dam, Luis María Drago, some articles of Criminology who published under the pseudonym of "Jus" in the nation. With Drago and others, he founded in 1888, the society of legal anthropology, where he gave a brilliant Conference which was later published under the title of fundamental principles of positive law school. In terms of policy, it was militant of the Union Civicaal end the Presidency of Juarez Celmar; He participated in the revolution of 1890, called "in the Park", and was a Senator in the legislature of Buenos Aires until his death.
He made an important contribution to the historiography of argentina from the positivist school with a history of the evolution of Argentina, stating that the devotion of the Argentina to federalism was due, mainly, to the Spanish heritage. The first part, titled the Argentine federalism, was published in 1887; the rest, with the full title above mentioned appeared in 1921.