ELISHA MITCHELL SCIENTIFIC SOCIETY. 9 



Nickel Camphorate. — Pure nickel hydroxide was prepared and 

 dissolved in camphoric acid, using as little water as possible. 

 On heating this solution on the water-bath a crust, whitish-green 

 in color, settled out. This was dried between bibulous paper 

 and analyzed. 



Analysis: 



( Calculated for 



Ni(C,oH 15 4 )2. Found. 



Ni 12.76 12.03 



The liquid poured off from this crust stood some days over 

 sulphuric acid. A further settling out of the crust mentioned 

 above was noticed; then small green crystals began to form. 

 The liquid was filtered away from the crust and once more 

 placed in the desiccator. The crystals obtained were dried on 

 bibulous paper and analyzed. It was impossible, however, to 

 separate them from the crust. The analysis gave 12.50 per 

 cent, of Xi. Hence the compound was the same as above. 



Strontium Camphorate. — Strontium carbonate is but slightly 

 attacked by camphoric acid in the cold. On heating with water 

 the evolution of carbon dioxide is rapid. The resulting stron- 

 tium camphorate is soluble in water. Clusters of crystals are 

 easily gotten on evaporation over sulphuric acid. The first 

 analysis of the crystals was lost. Analysis of a crystalline 

 crust resulted as follows : 



Calculated for 

 SrC 10 HuO4.6H 2 <>. Found. 



Sr 22.23 21.50 



H 2 () 27.45 27.75 



