The book "Puerto Rican Peasant: His Physical, Intellectual and Moral Conditions, the Circumstances that Determine Them and Methods of Improvement" by the author Francisco del Valle Atiles is a study devoted to the study of the living conditions of the Puerto Rican peasants, their physical health, development and moral values. The author draws attention to the factors affecting the health and development of villagers, and also suggests ways to improve their lives. This book is an important source for understanding the socio-cultural situation of the population of Puerto Rico in a certain historical period.