L\ CHEMISTRY. 53 



existence from the oxydation of its own body; the plant ob- 

 tains the energy necessary for the organization of its food di 

 rectly from the sun. 



20. Show how man is made mainly of condensed air. 



Science has demonstrated that man is formed of condensed 

 air ; that he lives on condensed as well as uncondensed air, 

 and clothes himself in condensed air, that he prepares his 

 food by means of condensed air, and by means of the same 

 -agent moves the heaviest weights with the velocity of the 

 wind. But the strangest part of the matter is, that thou- 

 sands of these tabernacles formed of condensed air, and going 

 on two legs, occasionally, and on account of the production 

 and supply of these forms of condensed air which they re- 

 quire for food and clothing, or on account of their honor and 

 power, destroy each other in pitched battles by means of con- 

 densed air. LlEBlG. 



19. i. In making O from chlorate of potash (KO.CIOJ, 

 how much can be obtained from two pounds of the salt? 



6O=48=equivalent of constituent. 

 KO.C1O 6 =122.5= " " compound. 



a:=weight of constituent. 

 21bs.= " " compound. 

 60 : KO.ClOfi : : x : 2 Ibs. 

 48 : 122.5 : : x : 2 Iba. 



2. In making H, sine is used. How much sulphate of zitic 

 will be formed from 2. Ibs. of the metal* 



Zn = 32.5 = equivalent of the constituent. 

 ZnO.SO 3 -f7HO = 143.6= " " compound. 



2 Ibs. = weight of the constituent. 

 x= " " compound. 



Zn : (ZnO.SO 3 +7HO) :: 2 Ibs. : x. 



32.5 : 143.6 : : 2 Ib. : x. 

 a;=8.8 Ibs. (white vitriol, sulp. zinc). 



3. How much SO 3 will be required to make 50 Ibs. sulphate 

 of iron (FeO.SO^-jHO) ? 



