Abstract
On the circulation of the suprarena l gland, opinion is yet divided. In the early time, Moüer (1834) and Nagel (1836) state that arteries penetrated the capsule, divide into capillaries in the glomerulosa, and the capillaries run inwards to pour into central veins in the medulla, then the veins leave the gland. On the contrary Fr. Arnold (cited by J. Arnold 1866) describes another circulatio n taking part with only in the superficial layer of the cortex, that is, some of capillaries in the cortex proceed to the innerside and the others run to the outerside “umgekehrt.”