296 CHEMICAL EXPERIMENTS. 



ticed here the method of producing this gas in a more eafy, 

 expeditious, and economical manner, by merely prefenting 

 phofphorus to nafcent hidrogen. 

 Zinc, fulphurie For this purpofe, let water be decompofed in the ufual 

 phorus, nd a£" manner > b y means of, z' n c and fulphurie acid, and add to the 

 the gas j mixture a quantity of phofphorus. The hidrogen evolved will 



difiblve part of the phofphorus ; phofphorated hidrogen gas 

 which takes fire will be produced, and take fire at the furface of the fluid, fo 

 anTcon^nue^to 1011 ^ as tne decompofition of the water is made with confider- 

 burn in a beau ti- able rapidity. But the gas produced in this procefs burns with 

 manner * a more lambent flame than that obtained in the ufual manner, 

 probably on account of contafning a larger quantity of hidro- 

 gen. The experiment is neverthelefs brilliant ; for the gas is 

 difengaged in fmall bubbles, which cover the whole furface 

 of the fluid ; they difengage themfelves rapidly, new ones 

 are produced, and the whole fluid refembles a well of fire, 

 particular in- For the fuccefs of this experiment, it is efiential that the 



ftructions. water, during the action of its decompofition, be confiderably 



heated, which may be effected by a copious addition of fuh. 

 phuric acid, and that the phofphorus be prefent in a confider- 

 able quantity. Half a part of phofphorus cut into fmall pieces, 

 one of granulated zinc, three of concentrated fulphurie acid, 

 and five of water, anfvver this purpofe exceedingly well. 



2. Phofphorated Hidrogen Gas burns with a green Light in nafcent 

 hyperoxiginifed Muriatic Acid Gas, under the Surface of 

 Water. 



Phofphuret of Put into an ale-glafs, or Florence flafk, one part of phof- 

 hme, hyperoxi- ph ure t f lj m e, broken into pieces of the fize of a pea fnot in 



germed muriate r r . ' 



of potafh, phof- fmall fragments or in powder], and add to it half a part of 

 phoruf, and ful- hyperoxigenifed muriate of potafh. Fill the veffel with water, 

 duct f re undtr" an ^ bring carefull) into contact with the materials at the bot- 

 nvater. torn of the fluid, three or four parts of concentrated fulphurie 



acid. This may molt conveniently be done, by letting the 

 acid fall through a long-necked funnel, reaching to the bottom 

 of the veffel, or by caufing it to pafs down the fides of it. As 

 foon as the decompofition of the water, and that of the hyper- 

 oxigenifed muriate, takes place, flafhes of fire dart from the 

 furface of the fluid, and the phofphuret illuminates the bottom 

 of the veflel with a beautiful green light. 



3. Combitjiion 



