of Anhydrous Liquefied Ammonia. 



141 



ammonia, reddish-black crystals separated, apparently consisting of un- 

 altered iodine. I did not examine whether the residue contained any of 

 the explosive compound, "iodide of nitrogen." Iodic acid did not dis- 

 solve or show any change in the liquid. 



Wood-charcoal, also Brodie's intumescent graphite, did not dissolve or 

 change. C 2 C1 2 would not mix with the ammonia; but a little of it 

 dissolved, and the ammonia became slightly brown. Liquid C 2 Cl 4 mixed 

 perfectly, and after the evaporation of the ammonia it was left behind. 

 Solid C 2 Cl 6 did not dissolve or suffer any change. Liquid CC1 4 behaved 

 like C 2 Cl 4 . Solid CBr 4 * dissolved rapidly and very copiously, and did 

 not recrystallize until nearly all the liquid had evaporated. 



Boron crystals, boracic anhydride, silicon crystals, and precipitated 

 silica were all unaffected. 



Sulphur dissolved sparingly, and formed a deeply coloured purplish-red 

 solution, and on evaporation of the liquid a yellow film of it was left. 

 Liquid chloride of sulphur became dark red and solid in the gas, 

 and purple in the liquid, apparently with chemical action ; a portion of 

 the solid dissolved and formed a deeply purple liquid, on evaporation of 

 which the red solid was left behind. Bisulphide of carbon became yellow 

 and opaque in the gas, and changed in the liquid to a yellow bulky solid. 

 Selenium was unaffected. Selenious acid prevented the formation of the 

 liquid, probably by uniting with the ammonia, but did not enlarge in 

 bulk, or show any visible change. Bright tellurium was unaffected. 



Red phosphorus showed no change. White phosphorus dissolved to a 

 yellow liquid, and separated again on evaporation of the ammonia. 

 Phosphoric anhydride contracted in bulk in the gas, dissolved but very 

 slightly in the liquid, and exhibited no other change. Glacial phosphoric 

 acid was not visibly affected. Terchloride of phosphorus produced strong 

 chemical action, and formed a colourless bulky solid. Pentachloride of 

 phosphorus dissolved freely , and crystals formed on evaporation of the 

 liquid. 



Metallic arsenic was unaffected. Arsenious anhydride enlarged some- 

 what in bulk, but did not dissolve. Arsenic-acid crystals dissolved to a 

 very minute extent only. Terchloride of arsenic was converted into a 

 white solid with manifest chemical action. Teriodide of arsenic became 

 white and swelled considerably. Realgar became yellow, and partly 

 dissolved to a yellow solution, which on evaporation left an orange-yellow 

 residue. Orpiment turned dark brown in the gas, and dissolved slightly 

 in the liquid, producing a faintly yellow solution, which left a yellow film 

 on evaporation. 



Metallic antimony, sesquioxide of antimony, and antimonious acid were 

 not visibly affected. Hydrated antimonic acid was slightly dissolved. 

 Fused fluoride of antimony swelled very greatly in the liquid, but did not 

 dissolve ; it retained its enlarged bulk after evaporation of all the 

 * Given to me by the discoverers, Messrs. Groves and Bolas. 



