SPECIFIC GRAVITY AND DISPLACEMENT OF SOME SALINE SOLUTIONS. 131 



§ 55. Solutions of the Salts of the Ennead MEO^. — The reason for the small 

 number of results in the cases of RbBrOg, RblOg, CsBrOg, and CsIOg is the very sparing 

 solubility of these salts in water. 



Table X. : — KClOy — The values of c?A — -y in all the sub-tables are positive. 



In sub-table a they are oscillatory in character, the maximum value being O'lll at 

 m= 1/32 ; the minimum of 0-008 at w= 1/256 rises to 0-044 at m= 1/512. 



In sub-table c the maximum occurs at w=l/l6, while the minimum is at 

 m= 1/128. The nature of the oscillation is the same, but less pronounced. 



Table XL : — EbClO^. — There are somewhat irregular alternations between positive 

 and negative values of c^ ^^ — f in the sub-table a. They are also of appreciable magnitude, 

 and in sub-table c the oscillations are still apparent, although a definite change of 

 sign occurs at m = 1/128, when the values of d^ — v for higher values of m are positive, 

 and the lower values of m are negative. 



o 



In the table for MR = RbCl the same character is observed as here in the sub-table c ; 

 see note above. 



Table XII. : — CsClO^. — There are exhibited here regular alternations between com- 

 paratively high positive values and high negative values for c?A — v in sub-table a, 

 except at m = 1/250 and w = 1/512, both of which are negative. 



The maximum positive value is at tn = 1/32, while the maximum negative value is 

 at m= 1/64. 



Owing to the greater magnitude of the negative values than the positive ones in the 

 sub-table a, we obtain a complete series of negative values of comparatively high magni- 

 tude in sub-table c, and with the exception of a slight diminution in the negative value 

 at m= 1/128 below that where m= 1/64, there is a progressive increase of the negative 

 values from the beginning to the end, giving distinct evidence of expansion on dilution. 



Table XIII. : — KBrO^. — The character of changes in the values for d^ — v in all 

 three sub-tables is the same : a rapid fall in the positive values from O'lSS at m=l/8 

 to 0-021 where m-= 1/32, the negative values from m= 1/64 onwards being negligible. 



This is observed in all three tables, although in sub-tables h and c the high magni- 

 tude of the positive values for d^ — v\b slightly modified. 



This feature of the steady fall in positive values to a series of negligible negative 

 values is also to be seen in the series for MR = KBr, with the exception that there are 

 two negative quantities of appreciable magnitude in the values for o^A — v, where 

 m= 1/32 and in= 1/64 in sub-table c for KBr. 



Table XIV. : — RhBrO^. — In sub-table a there is a regular alternation between 

 rather high negative values and positive values, while in sub-table c there is a regular 

 transition from negative to positive values, the change of sign occurring at m= 1/256, 

 the general character being that of commencing with a negative value and rising to a 

 positive quantity. 



This is the only instance in these tables of the occurrence of contraction from the 

 highest concentration, m= 1/32, to the lowest, m= 1/512. 



