ACTION OF POTASSIUM ON SALTS AND OXIDES. {)$ 



phate of lime, sulphate ofbaryt.es, oxide of zinc, &c. it was 

 carried to near 300° of the centigrade thermometer [572°F.]. 

 The tubes we used were always broken, when the inflam- 

 mation was very vivid. To avoid minutise, we (hall confma 

 ourselves to the results we observed. 



Sulphate of barytes. Decomposed without any inflarn- On sulphate of 

 tnation, and sulphate of barytes obtained. arytes; 



Sulphite of barytes. Vivid inflammation, and sulphu- sulp-.ite of 

 ret of barytes formed. aiytes, 



From these two experiments we fhould infer, that the 

 oxigen is much less condensed in the sulphite, than in the 

 sulphate of barytes; and very probably also less condensed 

 in sulphurous acid, than in sulphuric. 



Sulphite ef lime. Slight inflammation : formation of a and of lime; 

 very yellow sulphuret. 



Sulphate of lead. Very vivid inflammation. sulphate of 



Sulphate of mercury but little oxided. Inflammation as and of merca- 

 with the mild muriate. r ^' 



Nitrate of barytes. Very vivid inflammation, and pro- nitrate of ba- 

 jection of the matter. ryle:J ' 



Nitrate of potash. Destruction of the metal without in- and of potash; 

 flammation ; which is owing, no doubt, to the nitre contain- 

 ing water. 



Superoxigenized muriates. Very vivid inflammation. oximuriates; 



Phosphate of lime. Decomposition without appearance phosphate of 

 of inflammation : production of phosphuret of lime. lime, 



Carbonate of lime. Decomposition without infhumna- and carbonatej 

 tion : charcoal set free. 



Chromate of lead. Vivid inflammation. chromate »f 



Chromate of mercury. Became slightly redhot : the mass ? » . 



^ ° and of mer- 



changed green. cury ; 



Arseniate of cobalt. Vivid inflammation. arsenate of 



Green and yellow tungstic acid. Vivid inflammation. oxidesWtuM- 



Red oxide of mercury. Very vivid inflammation : slight sien, 



detonation owing to mercurial vapour. mercury, 



Oxide of silver. Very vivid inflammation. silver, 



Brown oxide of lead. Like the preceding. lead 



Bed oxide of lead. Vivid inflammation. 



yellow oxide of lead. The same. 



Yell 



o-,v 



