ii FOOD OBTAINED BY THE PLANT FROM SOIL 17 



Experiment 14 



Place water in the retort A, and push the neck 

 of the retort into the condenser B. This condenser is 



FIG. 7. 



arranged so as to allow a stream of cold water to 

 flow in at (a) and out at (b), through the outer tube, 

 while the steam from the water in the retort passes 

 down the inner tube and is thus cooled and condensed. 

 Now place a lamp under A and let the water 

 boil vigorously. Soon drops of water will fall from 

 the end of the condenser into the flask. This is 

 pure or distilled water, obtained by condensing the 

 steam coming from the retort by means of the con- 

 denser. 



The Plant Pood in the Soil is only slightly 

 Soluble 



On boiling away the water which had been shaken 

 up with the garden mould, very little residue, we 

 found, was left (Experiment 12). 

 



