94 Natural Salvation. 



temperature; life is possible below the freezing point; 

 the cold-blooded organisms do not require so high a 

 temperature. High temperature in mammals and birds 

 appears to be a concomitant of nutrition rather than a 

 biogenetic necessity to life itself. Not that animal intel- 

 ligence would be heightened by a reversion to reptilian 

 temperatures ! But other methods of keeping the human 

 organism warm could be found, methods less destructive 

 to the component cells than by extra- and intracellular 

 oxidation. 



We are as yet, of course, at the first outer confines of 

 this great question of cell food. But even now it begins 

 to be evident how much depends on a better understand- 

 ing of nutrition, and the great desirability of directing re- 

 search in this direction, backed by the resources of the 

 civilized world. Immortal life is the stake which science 

 is playing for along this line of investigation. It is a 

 true world-problem, one of those more than Herculean 

 labors of the coming century which call for the united 

 efforts of mankind. 



At all this my scientific friends will smile and say, 

 44 Idle dreams, Utopian fancies! Mankind gives no token 

 of such united action. Mad Mullahs, Mahdis, and War- 

 lords bid fair to rant and run riot up and down the earth 

 for centuries to come. Men have not sufficient knowledge 



