44:4 Mr. Gervaise Le Bas on the 



The result of this is that when it is sought to discover the 

 contractions of substituted hexamethylene compounds, they 

 will be found to be apparently smaller than the contractions 

 for aromatic compounds. 



y y 



The Naphtenes. C ^<^ \.^ 



A~/\ 



W. Compound. M.V. 2A.V. A. 



42 Heptanaphtene C 7 H 14 142*1 155*4 -13*3 



\/ \/ 



XT' \- 



^ .^ X CH 3 



/\ /\ 



4* Octonaphtene C 8 H 16 165*0 177*6 -12*6 



\/ \/ 



A A 



CH 3 



54 Nononaphtene C 9 H 18 [187*6]* 199*8 -12*0 



\/ \/ 



ch,"'x. / " 



CH 3 



CO Dekanaphtene C 10 H 20 [208*8] 220*0 -13*2 



\/ \/ 



CH.'X /^CH.(CH 3 ) 2 



A A Mean... -12*8 



* Calculated by means of formula given "below. 



