radicactivity in the patient's urine has also been reduced very mich by now, nThe symptoms may be described separately for the external injuries to the body surface and the injuries to the organs, especially the blood producing organs. nAl] patients suffered on the head and the upper half of the .body such external injuries as the depilation, deposit of pigment, inflammation of the skin, ulcer, eruption with abcess and scab, and blister. They are recovering from theSe injuries by the treatment in the hospitals. But some of them are still suffering from the depilation in wide area. "The injury to blood-producing organs was observed as the decrease of blood count of leucocyte, granulocyte and red blood corpuscles as well as the decrease of the nunber of cells in the marrow. It was getting worse since they were hospitalized. Especially, the blood count of leucocyte fluctueted eround 1000 per cubic milimeter and the number of carrow cells has been of the erder of 10,000 per cubic milineter in several cases. It was thus hematologically diagrosed to be the general acute sicxness of the marrow, Tr. encrment of te "In these cases, in spite of the exple blood transfusion andhe,ian’s Ce use of pills for blood-production, the blood count of the ieiés cyteyes nd granulocyte did not increase and even the hemorrhagic tend Ency "FP eered, FPurthersore, their texpereture had been as high as © C though very effective pills of antibiotic had been ven, which has mede us fear of en unfevorable prognosis, Such dangerous conditicn continued until recently end we hed ta refréin from publishing the fects n oréer to avoid undesirable effects on the treetrent of the 5 avients. ortunately, however, the Sever began to leave the petients very recently and moreover the tlood count of leucocyte in scne cf the seriovs cases began to increéese. ie are working haré to cure the patients ccmpletely. it would be our qety end eaiso the hope of ali recple te séve the lives of all petients of this unfertunete accident." Swoaarizing the clinical symptoms, it may be ssic thet the skin burn by the@- rey has almost been cured. Tnere is now hardly eny cetecteble radioactivity remzining on the skin surface. The most sericus rroblez is the injury to the marrow. Two causes may be respcnsible for this. Cne is the rediation (especially the Y-rey) from outside, the racicective elezents deposited in the boar. cuserved up to now mey be mai right have & plev > letter two. OR fact that tne estinated radiation to which the the two weexs stey on the boat ezcunts to 20 r end the cther is thet of 5 +