. . Acid ; \C 4 H 4 4 



Acrylic ; acetic .... j 



r Hydrocarbon. 

 66 IPropylene?, 



Acrylic alcohol, the history of which we have endeavoured to 

 sketch in the preceding pages, and in the study of which we are now 

 engaged, is the third term of a series of alcohols, which is parallel to 

 the ordinary alcohols of the formula 



C n z Hn2+2 ^2> 



and the prototype of which is ethylic alcohol. The acid corre- 

 sponding to this alcohol is acrylic acid, as has been stated. Che- 

 mists are already acquainted with several homologues of acrylic acid, 

 which stand to the series of fatty acids in the same relation which 

 exists between our new alcohol and common alcohol. Cyanide of 

 acryl, which is readily procured by the action of iodide of acryl upon 

 cyanide of silver, but which as yet we have not been able to obtain 

 in a state of perfect purity, when submitted to the action of potassa, 

 will obviously furnish an acid, homologous to acrylic acid equally as 

 cyanide of propyl is transformed into butylic acid. 



We terminate this note with a synoptical table of the two homo- 

 logous groups. 



Group of Alcohols. Group of Acids. 



C 2 H 2 2 C 2 H 4 2 Methylic C 2 O 4 (Carbonic ?) C 2 H 2 O 4 Formic 



C 4 H 4 2 C 4 H 6 2 Ethvlic C, H 2 O 4 C 4 H 4 O 4 Acetic 



C 6 H 6 O 2 Acrylic C 6 H 8 O 2 Propylic C 6 H 4 O 4 Acrylic C 6 H 6 O 4 Propionic 



C 8 H 8 2 C 8 H 10 2 Butylic C 8 H 6 O 4 C 8 H 8 O 4 Butylic 



C 10 H 10 O 2 C 10 H, 2 O 2 Amylic C 10 H 8 O 4 Angelic Ci H 10 O 4 Valeric 



C, 2 H 12 O 2 C 12 H M 2 Caproic C 12 H IO O 4 C 12 H 1!! O 4 Caproic 



C 14 H 14 O 2 C 14 H 16 O 2 C M H 12 O 4 C 14 H 14 O 4 ffinanthylic 



C 16 H 16 2 C 16 H 18 2 Caprylic C 16 H 14 O 4 C 16 H 16 O 4 Caprylic 



CM H M O, C x HJS O z CM Hj, O 4 Okie C* H^ O 4 Stcaric 



