The author of this 1933 text examines a wide selection of gospel manuscripts in English libraries, ranging in date from the eighth to the fourteenth century, with a view to explaining the alterations to which St Jerome's text was subject in the Middle Ages. The investigation not only sheds light on the structure of scholastic thought, but it also reveals clearly the successive stages in which, during the period of its formation, the scholastic method of exegesis reached the English Church.