144 



Mr. G. Gore on some Properties 



faint blue colour to the liquid, but did not otherwise dissolve. Cupric 

 carbonate produced no effect. Cupric sulphide was superficially changed 

 to a deep blue colour. White anhydrous cupric sulphate turned deep 

 blue and swelled greatly, but did not impart any colour to the liquid ; it 

 remained enlarged in bulk after evaporation of the ammonia. Cupric 

 phosphate produced no visible effect. 



Mckel filings were unaffected. Anhydrous oxide of nickel and hydrated 

 oxide of nickel were also unaffected. Fluoride of nickel suffered no great 

 visible change, and did not dissolve. Nearly anhydrous chloride of nickel 

 swelled and became of a purplish-blue colour, but did not dissolve : 

 after evaporation of the liquid, the salt remained enlarged in bulk. 



Oxide of cobalt, also fluoride of cobalt, was unaffected. Anhydrous 

 chloride of cobalt swelled to about ten times its original volume and fell 

 to powder, but was quite insoluble ; it partly contracted in bulk again 

 on evaporation of the ammonia. Carbonate of cobalt was unaffected. 

 Sulphate of cobalt (not perfectly anhydrous) swelled, but did not dissolve ; 

 it remained expanded after evaporation of the liquid. 



Electro-deposited iron was unaffected. Anhydrous persulphate of iron 

 absorbed much of the liquid, swelled considerably, and showed signs of 

 decomposition, but did not dissolve ; it remained enlarged in bulk after 

 evaporation of the liquid. 



Metallic manganese, fluoride of manganese, chloride of manganese, and 

 manganic sulphate were all unaffected. 



Chromic acid turned yellow, absorbed ammonia, swelled greatly, dis- 

 solved slightly, forming a yellow solution, and retained its enlarged bulk 

 after evaporation of the liquid. Solid green fluoride of chromium was 

 not affected. Violet chloride of chromium swelled considerably and 

 dissolved slightly, forming a purplish solution ; it did not contract to its 

 original bulk after evaporation of the liquid. Chromate of silver turned 

 bright yellow at its edges, and nearly black in its mass, but did not 

 dissolve. Chromate of copper was not dissolved, but was converted 

 externally into a substance having the colour of sesquioxide of chromium. 

 Metallic aluminium was unaffected. Yellow oxide of uranium and nitrate 

 of uranium produced but little effect. Fluoride of uranium was slightly 

 dissolved, forming a yellowish solution. 



Metallic thallium, peroxide of thallium, and fluoride of thallium were 

 not visibly altered. Bright metallic lead and red oxide of lead were 

 unaffected. Mtrate of lead dissolved, and was apparently partly decom- 

 posed ; crystals separated on evaporation of the last portions only of the 

 liquid. Fluoride of lead produced no effect. Chloride of lead swelled 

 considerably, but did not dissolve ; it did not diminish in bulk on 

 evaporation of the liquid. Iodide of lead turned white, dissolved slightly, 

 and colourless crystals were left on evaporation of the liquid. Iodate of 

 lead produced no effect. Yellow chromate of lead behaved in all respects 

 like the iodide. 



