284 PHOSPHURETTED HYDROGEN. 



resembling wax in appearance. The 

 word is derived from two Greek words, 

 which mean " to produce or carry light" 



Q. HOW is PHOSPHORUS OBTAINED ? 



A. By heating bones to a white 

 heat; by which means the animal 

 matter and charcoal are consumed, and 

 what is left is called "phosphate of lime. 1 ' 



Q. How is PHOSPHATE OF LIME converted 

 into PHOSPHORUS? 



A. It is reduced to powder, and 

 mixed with sulphuric acid ; which (being 

 heated and filtered) is converted into 

 phosphorus. 



Q. Of what are LUCIFER MATCHES made ? 



A. Of phosphorus; and above 250 

 thousand Ibs. of phosphorus are used 

 every year in London alone, merely for 

 the manufacture of lucifer matches. 



Q. Why does a PUTREFYING dead BODY 

 SMELL so offensively ? 



A. From the phosphuretted hydro- 

 gen gas, which always arises from 

 putrefying animal substances. 



The escape of ammonia and sulphur contributes also 

 to this offensive effluvia. 



