[BARNES] RESISTANCE OF A HYDRATED ELECTROLYTE 33 



which has been observed, cannot, we think, be attributed to a change 

 in dissociation of the hydrate as was first suggested.'- It is to be 

 accounted for by some change in the relation of the salt and water mole- 

 cule, which would not necessarily produce any change in the electrical 

 conductivity. We are not in a position at present to state the nature of 

 this relation definitely. Previous determinations of density, which have 

 been made, show a similar change in relation when reduced on the same 

 plan, but as a rule values of densities quoted have been read off from 

 a smoothed curve and therefore miss the point in question. 



• Trans. Roy. Soc. Can., VI., 75 (1900). 



