1. A method of recording changes in bone blood-flow using a heated thermocouple is described.

2. Occlusion of the femoral artery or aorta decreases the blood-flow in the femoral metaphysis.

3. Occlusion of the femoral vein and intravenous injection of adrenaline, nor-adrenaline, acetylcholine, histamine or hexamethonium bromide increase the blood-flow in the femoral metaphysis.