CHEMISTRY 201 



CH 2 -CH 2 CH 2 -CH 2 



II V 



CH 2 CH 2 CH 2 



CH 2 



Moreover, such rings may unite with carbon 

 chains, both those containing single bonds, 

 and those containing double and treble bonds, 

 whether straight or forked, in great variety; 

 and also with other rings, e.g. 



CH 3 CH 3 CH 3 



