234 CESIUM 



quotes pipetted into petri dishes for direct Geiger counting of the Hquid. 

 Where increased sensitivity was required, the solution was evaporated to 

 dryness in the petri dish, increasing the counts 8-fold, or the sample was 

 counted dry in a 1-cm steel cup in a windowless proportional counter, 

 increasing the counts about 92-fold. In a study of the effect of desoxy- 

 corticosterone on cesium excretion, about 10.3 ng cesium carbonate 

 labeled with Cs'^'* was injected into rats (Cs-4). 



Cs-1. Cochran, Kenneth W., John Doiill, Marcella Mazur, and Kenneth P. DuBois: 



Acute Toxicity of Zirconium, Cokimbium, Strontium, Lanthanum, Cesium, 



Tantahmi and Yttrium, Arch. Ind. Hyg. and Occupational Med., 1: 637-650 



(1950). 

 Cs-2. Hood, S. L., and C. L. Comar: Metabolism of Cesium 137 in Laboratory and 



Domestic Animals, ORO-91, May, 1953. 

 Cs-3. Hood, S. L., and C. L. Comar: Metabolism of Cesium 137 in Rats and Farm 



Animals, Arch. Biochem. and Biophys., 45: 423-433 (1953). 

 Cs-4. Dorfman, Ralph L, and Albert M. Potts: Influence of Desoxycorticosterone on 



Cesium Excretion in AdrenaJectomized Rats, Proc. Soc. Exptl. Biol. Med., 72 : 



702 (1949). 



