OF ARTS AND SCIENCES. 



253 



III. 0.2772 gr. of the substance yielded on electrolysis 0.0476 gr. 



of copper. 



IV. 0.1418 gr. of the substance yielded on distillation enough am- 



monia to neutralize 13.25 c.c. of decinormal acid. 

 V. 0.1403 gr. of the substance required on distillation 13.24 c.c. 

 of decinormal acid. 

 VI. 0.1895 gr. of the substance required on distillation 17.79 c.c. 



of decinormal acid. 

 VII, 0.1472 gr. of the substance required on distillation 14.19 c.c. 

 of decinormal acid. 

 VIII. 0.2319 gr. of the substance yielded 0.0895 gr. of argentic 

 chloride. 

 IX. 0.2244 gr. of the substance yielded 0.0870 gr. of argentic 



chloride. 

 X. 0.1679 gr. of the substance gave on combustion 0.0998 gr. of 

 carbon dioxide. 



A fourth sample, which had a similar appearance, was found to con- 

 tain 17.61 per cent of copper and 9.94 of chlorine. This had proba- 

 bly begun to lose water and ammonic acetate. A finely powdered 

 specimen kept for eleven months over sodic hydrate was found to con- 



