72 



Dr. W. W.J. m<sol on the 



Table II. KC1. 





M.V. 



M.V. 





r 





n. 



found. 



calculated. 



A, 



n 





1 



1827-7 



1827-8 



+0-1 



27-8 





2 



1857-1 



1856-8 



-0-3 



28-4 



29-0 



3 





1886-8 





28-9 



30-0 



4 



1917-8 



1917-6 



-0-2 



29-4 



308 



5 



1949-8 



1948-8 



-10 



298 



31-2 



6 





1980-3 





30-1 



31-5 



7 



2010-9 



2011-8 



+0-9 



30-3 



31-5 



8 





2043-1 





30-4 



1 31-3 



8-38 



2058-7 



2054-7 



-4-1 





| 307 



9 





2073-8 





30-4 



•=27-103. j3=0-738. r =0-041. 



On the supposition that the general formula 



v 



- =a + n/3—n 2 y 



accurately expresses the mean molecular volume of the salt 

 in a solution containing n molecules, it follows that the form 

 of the corresponding curve is that of a parabola. There is, 

 therefore, this relation between the constants /3 and 7, namely 



that — expresses the apex of the parabola. But, as will be 



seen from Table V., ~— also expresses the solubility of the salt 



in molecules per 100 water-molecules. Only the first half of 

 the parabola is met with in nature; a further addition of salt, 

 were it possible, would produce contraction. 



Table III. NaNO s 



m. 



M.V. 

 found. 



M.V. 

 calculated. 



A. 



r 



n 





1 





1828-9 





28-9 





2 



1858-9 



1859-0 



+0-1 



29-5 



30-1 



2-5 



1874-4 



1874-5 



+0-1 



29-8 





5 



1955-0 



1955-5 



+0-5 



31-6 





17 





2380-6 





34-2 





18 





24151 





34-2 



34-5 



18-45 



2430-2 



2430-5 



+0-3 



34-2 





19 





2448-9 





34-2 



33-8 



«=28-3. 0=0-65. r =0-018. 



