CONSERVATION OF ENERGY 241 



reason why we should be called upon to deny 

 a fact which seems to be otherwise clearly de- 

 monstrable, and, it is also clear, that whether 

 we are yet on the right track or not, it is at 

 least possible to make some suggestions as to 

 the direction in which the final solution of the 

 difficulty may some day be arrived at. 



The common-sense way of looking at the 

 matter is something like this. No one but an 

 ignoramus will claim that we know all that can 

 be known about the so-called Law of the Con- 

 servation of Energy. If it is clear as it seems 

 clear to many persons that there is something 

 more in living bodies than the mere operations 

 of chemistry and physics, then the " Law " 

 will require adjustment to that fact. Why 

 not ? There is nothing blasphemous in the sug- 

 gestion, though one might think so from the 

 reverence which is paid to the Law as now 

 formulated. 



What is more; this adjustment has had to 

 take place on more than one occasion, notably 

 in connection with the discovery of radium and 

 its ways for which adjustment see the books 

 on matter and energy. 



If there is such a thing as an entelechy, and 

 if it seems to be incompatible with the Law of 

 the Conservation of Energy, then it clearly 

 follows that we do not know all that there is 



Q 



