THE CONSEKVATION OF ENEEGY 133 



servation of Energy is incorrectly formulated and 

 will require modification when the state of our 

 knowledge is more advanced, or that the form of 

 energy in question stands to the Law in some 

 relation which has not yet been made quite clear. 



Before leaving the matter there are certain 

 other points which should not be left out of con- 

 sideration. 



We recognise, of course, that there is a certain Directive 

 amount of energy displayed in all material activity. p< 

 But this is not all. There is also a directive power, 

 and this power plays the part of an orienter, so to 

 speak, of the energy, though it does not increase or 

 diminish its sum. We have, therefore, to recognise 

 a qualitative element in all such operations. In^ , 

 fact, mechanism itself remains absolutely inexplic- 

 able if we try to reduce everything to the play of 

 mechanical forces. 



Hence we are driven, at all costs, to recognise 

 a duality, the very duality so much objected to by 

 the monistic school. 



It is quite clear that an agent may modify the 

 direction of a force or a moving particle without 

 altering the quantity of its energy or adding to the 

 work done. That is to say, it is possible to bring 

 forward an example of a purely qualitative influ- 

 ence. 



For a power acting at right angles to the 



