238 THE ACTION OF THE LIVING CELL 



TABLE XIV 

 Effects of Intraspinal Injections of Ash Solutions 



All the injections were made in the last lumbar space. 



ing suggests the existence of a possible similarity be- 

 tween the composition of the ash of closely related 

 species. (See Figure 15, facing page 262.) 



One must not, however, confound the apparent spe- 

 cies specificity of the various ashes with the remark- 

 able protein specificity of different species which has 

 been so carefully investigated by Nuttal (1904) in 

 his studies on the correspondence between immuno- 

 logical relationships and accepted zoological classi- 

 fications. Thus we have shown that the ash obtained 

 from rat tissues, when injected intravenously, is about 

 as effective as cat tissue ash in causing shock and death. 

 Further, in the experiments on guinea pigs it was 

 shown that following intraperitoneal injection all 



