Summary: The text discusses the evolution of book illumination in Europe during the early Middle Ages, focusing on centers such as Reichenau, Winchester, and Metz. It highlights the distinctive styles and influences of each school, such as the use of color, fluidity in painting techniques, and ornamental motifs. The Reichenau school, influenced by Byzantine art, developed a dynamic and expressive style with intricate details. In contrast, the Winchester school produced Gospel Books in a pure "Winchester" style, characterized by sumptuous compositions and intricate decorations. The Metz school, affiliated with the royal court, created Sacramentaries richly decorated with gold acanthus tendrils. The text also mentions the primitive and backward nature of Spanish illumination during this period, attributing it to the Country's isolation due to Islamic conquests. Overall, the text emphasizes the varied and innovative developments in book illumination across different European art centers in the early Middle Ages.