416 Mr. G. Gore on Chemical Reactions obtained 



Caustic baryta, lime, and soda-lime slowly acquired a lemon- 

 yellow colour. Bisulphide of carbon that had been saturated 

 with gaseous fluoride of silicon fumed in the air strongly. Bi- 

 chloride of titanium (freed from excess of chlorine by agitation 

 with mercury) mixed instantly with bisulphide of carbon, and 

 formed a yellow and strongly fuming liquid. 



Metallic arsenic in contact with platinum slowly imparted a 

 brownish-yellow tint to bisulphide of carbon, and appeared to 

 dissolve in very minute amount. Iodide of arsenic formed a dark- 

 red solution. Bromide of arsenic formed a colourless solution. 

 Terchloride of arsenic mixed freely. Iodide of antimony dis- 

 solved sparingly, and formed a red solution. Bromide of anti- 

 mony dissolved to a colourless liquid. Terchloride of antimony 

 dissolved freely, and formed a colourless liquid. Pentachloride 

 of antimony produced decomposition, with a light yellow preci- 

 pitate, and two liquid layers of reddish-yellow colour. 



Carbonate of cadmium slowly became reddish yellow. Bi- 

 chloride of tin mixed freely, and formed a colourless solution. 

 Thallium slowly blackened. Carbonate of cobalt became of a 

 dark red-brown colour. Copper reduced by hydrogen slowly 

 became black. Protochloride of mercury dissolved to a small 

 extent. Silver in contact with platinum slowly blackened. 

 Crystals of nitrate of silver blackened superficially. Benzoic acid 

 dissolved moderately, and formed beautifully flat colourless crys- 

 talline plates. The proportion of instances of the foregoing class 

 in which no apparent effects occurred, and which are not specified, 

 amounted to about 75 or 80 per cent. 



Bisulphide of carbon added to a saturated solution of proto- 

 chloride of mercury in ether precipitated the mercury-salt unde- 

 composed. 



With a solution of phosphorus in bisulphide of carbon the 

 following positive results occurred (the liquids were all kept 

 in a dark place) : — Anhydrous boracic acid slowly became of a 

 lemon-yellow colour. Anhydrous sulphuric acid was decom- 

 posed, and sulphurous acid gas set free. Iodine dissolved and 

 formed a fuming liquid, which was of a yellow colour, unless the 

 iodine was in excess ; if the proportion of the solvent was small, 

 a mass of crystals was produced. Iodic acid slowly decomposed 

 with formation of a copious scarlet-red powder, and the liquid 

 became yellow. Bromine dissolved with violent action, and pro- 

 duced a nearly colourless fuming liquid ; if the proportion of the 

 solvent was small, the addition of an excess of bromine caused a 

 precipitate. Iodide of ammonium became lemon-yellow. 



lodate of potash became yellowish red, and the supernatant 

 liquid became yellow. Nitrate of potash became lemon-yellow. 

 Hydrate of soda slowly became red. Iodide and bromide of 



