The text is a fine example of the popular Medieval and Renaissance gothic book-hand script, known as lettre bâtarde. The bastard or bastarda script became extremely popular in Medieval Europe across the 13th and 14th century. This type of script uses characters written in a cursive form, seeking however an elegance and a composure that make them easily readable.
To discover more about Medieval manuscripts, please visit our relevant blog post: A Brief History of Manuscripts.