268 MENTAL AND PHYSICAL RESULTS. 



produce children, but partly to their disinclination to do so, and 

 partly to their unending wars, which were continually thinning 

 their ranks. While it is still too soon for wars to cease, there is 

 such an increasing tendency to check it that there is very little 

 danger of future wars having much influence on future genera- 

 tions. The danger in the future lies more in the disinclination to 

 reproduce than in either wars or sterility. 



DOMINANT RACE OF THE FUTURE. 



If asked what race will in the future dominate the world I 

 would unhesitatingly reply : That race which can increase in num- 

 bers at the latest average age of reproduction. The increase does 

 not need to be rapid, but it must be actual. Fear need not be 

 expressed because some earlier reproducing race is increasing more 

 rapidly. When the pressure of population becomes greater the 

 early reproducing and less intelligent races will give away before 

 the stronger and more intelligent. The result of this may be seen 

 in many parts of the world. 



CONCLUSION. 



Evolution is a result arising from increased length of time 

 between generations when the functional activity remains constant, 

 or from increased functional activity when the time between genera- 

 tions remains constant, and is most marked when time and degree 

 of activity both increase. Degeneracy originates in decrease of 

 time and activity, though it may arise from an exhausting activity 

 or from a length of time great enough to produce exhaustion. 



Knowing the forces antecedent to evolution we may set these 

 forces into operation and, theoretically, may arrive at any desired 

 degree of development. Within the space of eight or ten generations 



