Abstract
Alkaline extraction of wood meal from white elm (Ulmus americana) has yielded a hemicellulose which on hydrolysis gave a sugar mixture containing xylose together with traces of galactose, glucose, mannose, and rhamnose in addition to two monouronic acids and one aldobiouronic acid. The latter was identified as 2-O-(4-O-methyl-D-glucopyranosyluronic acid)-D-xylopyranose.