Abstract
Information derived from studies of animal nutrition and to a lesser extent from human nutrition suggest that vitamin B 12 and aureomycin might have growth promoting effects in children. Recent work on protein nutrition indicates that the so-called non-essential amino acids may have a greater effect on growth than had been previously appreciated. The purpose of this work is to attempt to evaluate in the light of recent research, the effect of vitamin B 12, aureomycin hydrochloride and the notoriously inadequate protein, gelatine, as promoters of growth in children, as determined by metabolic balance studies.