Although this was published in 1946, the poems were inspired by the sea at Puerto Rico during his stay in 1943-44. It bears an epigraph from Guillen's 1945 edition of "Cántico" – again emphasising the strong links between the two men – on the subject of light being the best guide. The book also has a subtitle "Tema con variaciones" and the most noticeable aspect of these variations is the use of strict Spanish metrical forms such as "silvas" and "romances". In "Language and Poetry", Guillén says, "Even a Salinas…composed an occasional sonnet" but it is not until this work that he showed any sustained signs of interest in formal metrical structures. The vocabulary is more florid than in earlier works and there are even occasional uses of hyperbaton. These features are characteristic of the style of Góngora and lead the reader to wonder whether this is not his long-delayed contribution to the Tercentenary celebrations.