METHOD OF STITDYINU THK OIKCUl.ATION OK LKAD IX THE BODY 



14- 



oi radium-D derived irom the disintegration of an amount of emanation 

 corresponding to Yo — ^ ('• The results are shown in Fig. 1. 



The heights of the vertical columns represent the quantities of lead 

 injected daily; the shaded parts of these columns indicate the deposits 

 of corresponding injections. The upper black columns represent llio 



o 



I 



c 



3 



> 

 ZJ 



10 



>. 

 a> 



c 



in 



o 



«> 

 o 



o 



c 





o 



4) *- Q> 

 r c o 



O O 



O o 



ID i3 



% 18 19 20 21 22 23 24 25 26 27 2f 



Fig. ] 

 Distribution of lead in the rabbit 



quantities found in tlie daily faeces and the lower black columns show 

 the quantities present in the urine. The black rectangles in the uppei- 

 part of the diagram give the contents of the various organs. 



It will be evident that there is quite a substantial difference between 

 the results for bismuth and for lead; the amounts of lead stored in tlie 

 liver and eliminated in the faeces are larger, at the expense of the amounts 

 found in the kidneys and urine which are the major participants in the 

 case of bismuth. 



We have recovered 90 per cent of the amount of lead injected. 



10* 



