218 PICTURING MIRACLES 



ments and conditions and how most economically 

 to meet them. Much of this knowledge you can ob- 

 tain by burning a good healthy plant. As many as 

 thirty elements may be found in the ash, even sil- 

 ver, in traces. Scientists are divided in opinion as to 

 the number of essential elements some are neces- 

 sary, others may be beneficial, but a plant to be vig- 

 orous must have certain elements in greater or less 

 proportion, depending upon the type of plant. Some 

 elements have only recently been discovered to be 

 necessary, as Boron, which must be present for the 

 plant to succeed, though in very small quantities 

 5 %oo of one part in a million is necessary, while 

 7 %oo of one part in a million is detrimental. A 

 homely comparison would be that of one pea in one 

 hundred gallons of water to make pea soup. Never- 

 theless, without the very slight admixture of Boron, 

 the plant cannot flourish, so in making a liquid diet 

 for plants some elements are added as you might use 

 a shot gun some of the shot would scatter, pro- 

 ducing results, and at any rate, do little or no harm. 

 It being essential to have these chemical foods in 

 solution so that the root hairs can take them up, it 

 seems logical that the best way is to feed them in 

 liquid form, making assimilation easy, while that 

 surplus energy can go into the development of the 



