THE ISOCHLOKS OF NOVA SCOTIA. VICKERY. 359 



per amount of silver. Hence it is necessary to remove 43 ce. 

 from the solution and dilute to the mark with water. The 

 ratio between the chlorine and the silver solutions was then 

 found as follows: — 



Chlorine Silver 



4.21 '5.06 



6.21 7.16 



2.00 2.10 — .09 = 2.01 



6.21 7.24 



8.21 9.33 



2.00 2.09 — .09 = 2.00 



.*. 2.00 CO. chlorine solution = 2.00 cc. silver solution. 

 After a year of use the solution was again standardized, 

 with the following results: — 



Chlorine Silver 



4.79 5.28 



6.86 7.42 



2.07 



2.14 — 



.04 = 2.10 



Ratio 1.014 







.82 



.93 





2.85 



2.96 





2.03 



2.03 = 



.04 = l.( 



Ratio = .9804 







2.84 



2.99 





5.04 



5.18 





2.20 2.19 = .04 = 2.15 



Ratio = .9772 

 Average Ratio = .9006 

 It is observed from the above that one cubic centimeter 

 of the silver nitrate solution will precipitate one milligram 

 of chlorine; hence the number of cubic centimeters of silver 



