224 



stitution of the maïonic acid for the oxalic acid, causes a diminution of 

 the topical parameters in two, but an enlargement in the third direction 

 as well in the case of the racemic as in that of the optically-active 

 compounds. 



At all events this investigation has brought full evidence of the 

 fact, that the salts of the complex rliodlum-trimalonic acid maj^ also 

 be split into optically-active components, and that the phenomena 

 observed in their study are in agreement with Pasteur's law in its 

 fullest scope. 



Laboratory for Inorganic and Physical 

 Chemistry of the University. 

 Groningen, June J 918. 



