counts por minute; 10 April, 696 counts; 20 April, 671 counts; 30 April, $12 counts; the radioa otdvity aecrezsed rapidly in this ranner. Ca the other hand, wa lmow that it was considcrably stronger before 1 April. Since May it has gradually decreased, Now lot us consider the surface of body. The patients were thorouchly bathed at Yakizu; their hair was cut, thelr asils were trinced, and all contatitated* areas wore scrubbed, For this reason, when they were hospitalised they showed vory little contanination exccptinz at the finzor and toa nails, whera all of then shoved roactlons. Ey “careful nessucccont somo shoizd a cot of 200, but scrorclly the count w23 beticen 50 and 69, Doconbavinebicn of tha nails wis very diffiovlt but was gracwelly ecoo pltaisd uy brushing; by tha end of iy the esiuit hed decrezsed considerably. The count at the hair wis ery low following haireuts: 44 at the rexicum on 6 April; 7 or 8 in June; and 4 or 5 tn August, for ona gram of hair. Since eiequate Olocd supnly was vital to the patients at that t/a, wa mode tests on drep sanples ranging from 3 ng to 7 me, As the encimt vas very scsll, we could rot clearly|cetersine the reaction. Measuree rants wore taken on & 3-ce evaporation residus of medullar pincture fluid ?rea thres patiints, Tus s.ctsuresents seared somewhat greater then the beckzgrouv Lig]. A VO-cran fecal meaziduea :iscuted the sine as the beenground in “Q e753 and showed more commts3 in others, <Sove smitua sacples neds03 derccl scrarpinzs froa turn elcatrices showed more counts thoa t 3 bsekgruvid. It wos fornd that the bile taken on 23 April ind ecg eouw.ts than the bucksvoud in 20-ce residus samples. =x- tricted decayed teeth may have more counts than tip background, but a d3firite reaction was not perceptible. Dr. Daiken Higashi of the ii-ura Laboratory, Tokyo University, tested the urine sauples teen cn 28 March cond 21 April and noted radloe activity. Sinca then, the body surfaces have shom Little reacticn, dus to clesning, and we have stopped saking tests, teen Tests for radicactive contamination were mide rougnly In this Te toto: It 43 underatendable that there would be cre counts on the suslace of body. But if the sputun, bile, and medullar puscture fluid of some patients showed more counts than the background, dces thig rcan that radioactive substances were absorbad into the bedy by various voutes? Clicttes Since the teats were corcucted cn coagor sanples, we rust of course Le cautious. Such substances, having entered the body throush various routes, WLiL1 be speead throughout the body by the blcol, Tests on enimals show that it 1s trus of strcoatiua -- which 23 thrust to derestt in bene -- of phospl.sres, and of caleium. ‘This C232 1.2.0.6r concerns tha Luusn bedy, and we hevo never dealt with thace prcoleas. Goto: US DOE ARCHIVES Va must also ccasicer carefully potassium in the body, How did the substances enter ths blood?