Hokusai Manga — a sketchbook plate

The natural world. Hokusai filled the Manga with a teeming bestiary and a lush herbarium: fish and shellfish, insects and reptiles, birds in flight and at rest, horses, oxen, and the domestic animals of village life, alongside grasses, blossoms, and gnarled trees. His approach fused the disciplined observation of a naturalist with the economy of a master calligrapher, reducing a creature to the few essential lines that convey both its structure and its living energy. Some pages read almost like field guides, arraying many specimens for comparison; others isolate a single animal in a moment of vivid motion. This attention to the natural world reflected a broad Edo-period fascination with flora and fauna, fed by imported illustrated books and a flourishing culture of amateur study. For the artists who copied these pages, they offered a ready library of forms; for us, they reveal how Hokusai's genius lay as much in patient looking as in bold invention.