432 



CHEMICAL ELEMENTS IN LIVING MATTER 



and animal organisms; namely, F, CI, Br, I, Si, Na, Ca, and Mn. 

 These seventeen bioelements are shown in their relative order in 

 Fig. 1, all of them occupying neighboring places. 



In addition to these elements there are some apparently essential 

 to certain species of plants and animals, such as Al, Cu, Cs, B, Ba, 



TABLE II. 



Distribution of Chemical Elements. 



The data of Columns 2, 3, and 4 are taken from Clarke,* those of Column 5 

 from Farrington, O. C, {Field Museum Nat. History, Publication 120, 1907; 

 Publication 151, 1911), whose report contains analyses of 318 iron and 125 stone 

 meteorites. 



