This unique 19th century scientific treatise on Daphnia Mucronata (water flea) is a single, original antique manuscript from England. Written by the well-known businessman, zoologist and microscopist, Thomas Bolton, in the 19th century, the treatise provides detailed information about the water flea, making it a valuable addition to any collection of scientific literature. The treatise is done on paper in black ink, and is a very rare piece that offers insight into the scientific knowledge of the time. Bolton produced it at his new business premises at Ann Street in Birmingham - the 'Microscopist's and Naturalist's Studio'.