419 



Ine values tor - iiidicaled an angnie?i(in<>- decree of association, it 



would be verv diflicidt lo imagine, why the larger number of 



liquids just show jt-Z-cni-ves of the type 3 : for from the gradual 



d.i 

 decrease ot :^ with increasing temperature in these cases, we must 

 Ot 



conclude, that the association of the liipiid wouhl increase for most 



liquids with a rise of temperature. But because by far the most 



dissociations are accom|nxnied by a heat-absor|)tion, the mentioned 



conclusion could surely be hardly put in concordance with the laws 



of the mobile equilibrium. With liquids, which will dissociate to a 



higher degree at higher temperatures, one had to ex|)ect on the 



contrary the progress of type 1: \valer e.g. is such a liquid, showing 



a gradual dissociation of complex molecules into simpler ones at 



increasing temperatures, and the ii-t-cnwe here really possesses^) 



the expected type J. In the same way we observed some organic 



liquids [lJiethi/i"(Mnlate; Ethi/I-Propi/hceti/Ioacetate ; Propyl-, and 



Isobutyl-Cyanoacetates ; o-ToUiidine ; Resorcine-Jfonomethyleiher ; 



Hydrockinoiidimethylether ; a-Qinipholenic Acid; etc.), for which 



a gradual dissociation or decomposition at higher temperatures 



could be stated, and for those we found also a faster increase of 



oft 



— than before, as soon as the temperature of beginning decomposition 



was surpassed. In opposition therewith is the case of (7 (?é?/i6' «c^V/, where 

 a gradually proceeding depolymerisation with increasing temperature 

 has been quite doubtlessly proved, and where notwithstanding 



this fact, the value of t— - remains constant within verv wide limits 



at 



of temperature. ■') 



These facts seem after my opinion to make it very dubious, if 



Öfi 



the inci-ease or decrease of v- ^vith varving temperature can be esteemed 



d/Lt 



1) From EöTVös' obsei'vations one can deduce already immediately that — - 



Ot 



will increase with rising temperature in the case of water: he observes between 



3° G. and 40° C a coefficient: 1,59; between 40^ G. and 100° G. : 1,80; between 



100° 0. and 150° G. : 2,28; and between 150° and 210° G. : 2 27. 



-) Also this fact can be already de.iuced from Eötvöö' observations: between 



21° and 107^ C. he fmd.-^ for ~: 1,^2; between 107° and 100° G. also: 1,32; 



dt 



between 160° and 230° G. : 1,38. 



