APPENDIX 



Page 46. 



THE issue we have raised is so important that we 

 here simplify and more completely illustrate it. 



Example : Everyone must have noticed the heaps 

 of stones lying on the roadside to be used for repairing 

 the road. 



These stones are collected, and one by one, " added " 

 to the heap. This process is called " addition." We 

 notice that addition is only removing matter from one 

 part of the earth's surface to another part. We cannot 

 create matter. Then when the stones are removed 

 from the heap for the purpose of repairing the road, 

 we take from the heap, and that is "subtraction." 

 These are the only two operations nature recognizes, 

 and therefore are the only two that can be performed 

 by man. 



Now, the physicist states such operations are too 

 vague to give absolutely rigid definite ideas. Numerical 

 values must be given to the operations so far, good. 

 He therefore gathers the stones into say a 5 gallon 

 measure, and adding measureful to measure ful, say 

 ten times, he obtains a heap of stones which has a 

 volume of 50 gallons. This is multiplication (5 x 10). 



Having obtained this heap by "addition," he by 

 " subtraction " takes away half the heap, that is, he 

 fills the measure five times and gets a second heap of 



