( 96 ) 



was again fractionated after addilioji of some sulpliiu'lc acid; llie 

 ft's liave been corrected for the small remaining condnclivitv of llie 

 alcohol. 



With Ni SO., 6 aq. pure methylalcohol was used as diluting agent 

 in one series; in a second series an alcohol was used containing the 

 same amount of water as that generated by the hydrate on dissolving. 

 The methylalcohol used for the experiment with NiSO., 1 a({. had 

 been purposeh^ rectified over anhydrous coppersulphate. 



The followin"' table contains the results of the measurements. 



From the figures given it will be seen that the object of the inves- 

 tigation, that is to sa3' the determination of the extent of the elec- 

 trolytic dissociation, has not been attained because we meet with the 

 peculiar phenomenon that the conductive power at first decreases and 

 that for ?'m'J28 a minimum for (i occurs; on further dilution the 

 conductivity again increases but a ji oo cannot be determined. We 

 cannot, at present, account for this occurrence of a minimum Avhich 

 appears in the case of all the hydrates at the same concentration 

 (?; z= 128) and is consequently a definite pro|)erty of nickelsulphate. 



We further notice also that the conductivity of nickelsulphate 

 in methylalcohol (also when this contains a few per cent of water) 



