LAW;— ITS DEFINITIONS. 65. 



Thirdly, As applied to individual Forces the 

 measure of whose operation has been more or less 

 defined or ascertained. 



Fourthly, As applied to those combinations of 

 Force which have reference to the fulfilment of 

 Purpose, or the discharge of Function. 



Fifthly, As applied to Abstract Conceptions of the 

 mind — not corresponding with any actual pheno- 

 mena, but deduced therefrom as axioms of thought 

 necessary to our understanding of them. Law, in 

 this sense, is a reduction of the phenomena, not 

 merely to an Order of facts, but to an Order of 

 Thought. 



These great leading significations of the word 

 Law all circle round the three great questions 

 which Science asks of Nature, the What, the 

 How, and the Why : — 



(1) What are the facts in their established Order ? 



(2) How — that is, from what physical causes, 

 — does that Order come to be ? 



(3) Why have these causes been so combined ? 

 What relation do they bear to Purpose, to the ful- 

 filment of Intention, to the discharge of Function ? 



It is so important that these different senses of 



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