since in all probability substances of this nature would possess great physiological importance. The direct combination of glycerol and glycine was found to be impossible, and while experiments in this direction were proceeding, Abderhalden (Zeitsch. physiol. Chem., 1910, 65, 53) published the results of experiments on the same lines, from which he drew the same conclusion. The combination of a-halogen substituted acids with glycerol was then carried out, with the ides of subsequent< displacement of the halogen by the amino-group.