SOS 



BROWN, SASMORE, AND JONES 



Fig. 5. Nevada Test Site burro, 625 rt-p, survival time 25 hours. Massive sub- 

 arachnoid hemorrhage (arrow), cerebellum. X 75. 



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Fig. 6. Head-irradiatccl burro, 485 r, survival time 24 hours. Large plasma lake 

 surrounding blood vessel (arrow). Other lesions in the pons are perivascular cuffing 

 and hemorrhage. X 175. 



