47 



In both cases the numbers for the odd members fall con- 

 tinuously. In the even series there is a regular minimum, 

 and in one instance a corresponding maximum at a distance 

 of six carbon-atoms. The resemblance becomes clearer when 

 the results are plotted graphically. 



ZM.P 



24-0, 



220 



200 



180 — 



160 



10 



12 



14 



16 



10 



