The book must be understood against the backdrop of the political upheavals in Spain during the second half of the 19th century. One important political move concerning colonial affairs was the founding of the Sociedad Abolicionista Española in 1863. The work is reflective of Rafael Maria de Labra stance on slavery as he was actively involved in the campaign for its abolition in the governance. The ultimate goal of the collection is to elucidate the author’s position that he “will not abandon the libertarian cause of overseas colonies (la causa de libertad de la ultramarina). (Lars Raymund C. Ubaldo, Ph.D.) It is dedicated to the lawyer Manuel Regidor y Jurado, brother-in-law of Pedro Paterno. Spanish Antilles. This campaign eventually succeeded legally as slavery was abolished in Puerto Rico in 1873. (Lars Raymund C. Ubaldo, Ph.D.)