“…5 ) , and we have never seen the corresponding veins in the same roentgenogram. This fact may be due t o slowing of the blood circulation within the affected region as previously mentioned by RLUM and QUARZ (2) in a seriographic study performed by selective angiopneumography on tuberculous lungs. On the other hand, in early and miliary tuberculosis, the segmental branches have a normal appearance and it is possible to visualize the corresponding venous circulation, as in normal lungs (Figs.…”