“…Under these experimental conditions glucose absorption was reduced in presence of calcium in the Ringer's solution perfusing the blood vessels. McDOUGALL (1935) in experiments with isolated loops found no reduction of glucose absorption in hypocalcaemic urethaneanaesthetized rats. The glucose absorption was unaltered in absence or presence and at different concentrations of calcium chloride, and so was the absorption of water, chloride, xylose, and sorbose.…”