抄録
From the foregoing it will be seen that the excretory function in the animals at the fourth to the fifth weeks of life approxi-mated that in the full-grown adult, both as regards the first appearance of the dyes in the urine and the percentage excreted in the second and the fifth hours. Animals slightly younger, that is, those in the second and third weeks showed that they were still below the normal in their excretory function. Animals younger than these, in the first week after birth, were still more handicapped. (See Chart I and II). In regard to the times necessary for excreting 50% of the total dye introduced, those animals in the fourth to fifth weeks required only 2 hours; those in the second to third weeks, five hours; while those in the first week required more than five hours.
