160 Of the Sulphur 



4 clofe over an earthen pot, which, at the top, is 

 c about five or fix inches in diameter \ in this pot 

 c I previoufly melt between 10 or i2lb. of Jul- 

 € pbur 9 'till quite full thereof-, then I fet the fulphur 

 c on fire, fo as to burn all over its furface ; after 

 c which I place the glafs as clofe to it as may be, 

 4 without extinguifhing the flame \ the acid fpirit 



* trickles down into an earthen glazed vefTel, in 



* which the pot, containing the burning fulphur 9 

 c ftands upon an inverted dim : in this method, 

 c which generally fucceeds well, between five or 

 c fix ounces of fpirit of fulphur may be procured 



* in the fpace of twenty four hours V 



Alike 



* Mr. Seehl, in his paper, containing, An eafy method of 

 procuring the volatile acid of fulphur, recommends the two fol- 

 lowing ways. Procefs I. Take a pound of the flowers of brim- 

 fione, and five pounds of dry fixed alcali fait, grind them toge- 

 ther, and put the mixture into an iron pan ; add, by degrees, a 

 little water, fo as juft to diflblve the fixed alcali ; gradually dif- 

 pofe the whole to boil, in order the better to diffolve the fuU 

 phur » when thefe have boiled for a quarter of an hour, add more 

 water, by degrees, and when the fulphur appears to be diflblved, 

 filtre the folution, evaporate it to perfect drynefs in an iron pan, 

 'till it almoft begins to melt ; then take out the dry powder; when 

 cool, put it into a tubulated retort, which being placed in a 

 fand heat, and a receiver luted on, pour in at the tube, by de- 

 grees, two pounds of redlified oil of vitriol, and immediately fe- 

 cure the tube with a (topple of chalk, luted, and luting: then 

 give a gradual fire for fome hours, till the volatile fpirit is come 

 over ; after which, let the fire go out, take off the receiver, and 

 carefully pour the liquor into a glafs phial, to be clofely flopped 

 with a glafs Hopper. The volatile fpirit thus procured will be 

 about twelve ounces in weight, and appear tolerably limpid, fmell 

 extremely quick, pungent, and gaffy, or fulphureous. Procefs II. 

 Take a pound of the flowers of brimftone, four pounds and a 

 half of fixed alcali fait, grind and mix them well together, put 

 the powder into an iron pan, over the fire, add a little water, by 

 degrees, to diflblve the fair, then boil gently for a quarter of an 

 hour, add more water, and afterwards three pounds of ftrong 

 quick-lime, let all boil together for a while j when the folution 



is 



