m<l tht- * 



\\crc actually necessary. Here, as in all impr 

 ment, it was the actual r \\hich gave an 



. c to the intellect so that it got to work 

 in deviling improvements. Further, there were 



other means of securing the knowledge and 

 skill than by watching other men and gradually 

 trying one's hand at the art. None of the knowl- 

 edge was organized; moreover, it was gained by 



. crude experiments and the slow observations 

 .dual. Nevertheless, you and I today, 

 in the materials we use and the things with which 

 u e have to work, are the inheritors of all this 

 long struggle to conquer the difficulties of life and 

 to establish better methods of living. 



" ganlzing Knowledge. Many thousands of 

 years were necessary before man had passed from 

 the stone age and had learned to build great 

 houses and towns and to live with considerable 

 comfort through the manufacture of useful prod- 

 ucts from many materials. When language and 

 the art of writing had developed sufficiently, men 

 began to record the things they had found out and 

 the ways in which materials were handled to make 

 things. In other words, we began to organize 

 knowledge so that it was available for everybody, 

 not merely for the apprentice who worked with 

 the maker and could get his lessons from the 

 skilled craftsman's lips. So, each step of the way 

 since the art of writing entered in, the speed of 

 discovery and improvement has been quickened 



he record of all that has gone before and by 

 the use of that record in saving time on keeping 



