FATTY GROUPS AND SERIES. 



same general reactions, and are related to one another by a 

 regular gradation, both of properties and composition. 



Monatomic Fatty Acid Series 



(30.) But in the succeeding tables we have two of our primary 

 monobasic fatty acids namely, the third or propionic acid, 

 and the fourth or butyric acid associated each with a set of 

 bodies dissimilar to the acid, and dissimilar to one another ; but 

 all containing the same number of carbon atoms as the particular 

 acid, and correlated with it and with one another by a suscepti- 

 bility of mutual metamorphosis, to such an extent indeed, that 

 they may almost be looked upon as varieties of one and the same 

 primitive body. 



C 3 H 8 



C 3 H 8 O a 



a H o, 



C 3 H 6 O a 

 C 3 H 6 3 

 C H 



C 3 H 4 5 



Propylene 

 AUyl-alcohol 



Acrolic aldehyd 

 Acrolic acid 

 Pyruvic acid 



Mesoxalic acid 



