NITROGENOUS COMPOUNDS 51 



(NH 3 ) group by (CH 3 ), or other alcohol radicles, various sub- 

 stituted derivatives are obtained, e.g. sarcosine (methyl-amino 

 acetic acid), betaine (trimethyl-amino acetic acid), etc. 



(Sarcosine.) (Betaine.) 



The names and formulae of some of the more important 

 members of the group, which occur in plants and animals, are 

 given in the following table for purposes of comparison and 

 reference. 



