PEEFACE 



IN all scientific endeavour and elaboration, 

 those who strain after perfection, and put 

 off that hour when they hope to get beyond 

 criticism, only stand in their own light and 

 in the light of real discovery. 



By the time they decide (i.e. if they ever 

 do) to publish the results of many years' 

 experience, it may be then they only do so 

 and find there is ' nothing new under the 

 sun/ Such delay is more likely to end in 

 disappointment and chagrin than if they 

 published prematurely. It is the embryo of 

 a new idea which adds to future knowledge, 

 because it sets many a-thinking years before 

 the thought- wave would be otherwise started. 

 If Darwin had more elaborated before pub- 

 lishing, Wallace might have outstripped him. 



M842706 



