This document is an excerpt from the "Manual de Masonería Pública" by Dr. Enrique Patín Veloz. It discusses the history and principles of freemasonry in Puerto Rico from the late 19th century to the mid 20th century. It describes the origins and growth of freemasonry on the island, the founding of the first masonic lodges, and the roles and responsibilities of masons in Puerto Rican society during this time period.