CH. IX] OF TRANSMUTATION 139 



in its agglutinative powers than a serum obtained by means 

 of a dead culture. Some strains gave doubtful reactions. The 

 power of the same strain to form agglutinins and to bind 

 agglutinins appeared in some cases to differ. They therefore 

 concluded that the agglutination reactions did not constitute 

 a specific test. 



We may interpret these results in one of two ways. We 

 may decline to recognise the two types as representing dis- 

 tinct species ; or we may continue to regard them as distinct 

 species and acknowledge that their agglutination properties 

 are liable to variation. In either case the experiments 

 quoted are deprived of all significance as examples of 

 transmutation. 



