Syntactical juncture, the pronunciation of words in a close-knit phrase with the allophones appropriate to the pronunciation of a single word, is a characteristic and well-known phenomenon in Spanish. However, so far as we know, there is no precise or extensive statement about which elements of an utterance are usually connected by close juncture. Tomás Navarro Tomás, it is true, has written on the subject: El grupo fónico como unidad melódica, Revista de Filología Hispánica 1.3–19 (1939); Manual de entonación española 41–59 (New York, 1944); Estudios de fonología española 77–101 (Syracuse, 1946); and his remarks, stimulating and valuable as always, will be considered later. But his approach to the phenomenon in question differs from ours. We should like to suggest a special technique, the application of objective criteria to the Spanish phrase system, and to supply some basic conclusions.