PILUTE SOLUTION'S AT THE FREEZING POINT. 



TABLE VI. Potassium Permanganate, KMnO + = 158'L 

 August 14, 1899. Solvent, W = 219'Gl. R = 42900. 



Potassium Ferricyanide (prepared at the Chemical Laboratory). Selected crystals 

 were washed three times with No. 2 water, and a concentrated solution made at 100, 

 using a water bath. This solution was filtered, and allowed to crystallise, the 

 remaining liquid was poured off, and the crystals again washed, recry stall ised as 

 before, washed and drained, heated in a steam oven, and finally dried in a vacuum 

 desiccator for six days. The operations were carried on in a dark room, and Jena 

 flasks were used. 



The following solution was made up by gas light. 4 '8625 grammes of K 3 FeCy were 

 dissolved in 216'52 grammes of No. 2 water, giving a solution of strength 2'002 X 10~* 

 gramme-equivalent per gramme of solution. From this a second solution was 

 prepared, using No. 3 water ; its strength was calculated to be 5'089 X 10~ 6 gramme- 

 equivalent per gramme. 



TABLE VII Potassium Ferricyanide, iK 3 Fe(CN) 6 = 109'9. 

 August 21, 1899. Solvent, W = 219'32. R t= 34060. 



2 Y 2 



