n> <ind the Proceue* 43 



That is what is meant by learning from the de- 

 fects of the machine. In so learning we increase 

 store of exact knowledge and thrust it forward 

 with our imaginations into experiments calculated 

 to correct errors in efficiency and so reach perfec- 

 tion. 



Section III 

 The Men and the Processes 



i:ng New Processes Requires Patience. 

 When you have been idling away a few minutes 

 looking at the store windows on an off day, per- 

 haps you have noticed some of those wonderful 

 vases with rich deep coloring. I do not mean the 

 flat, thin effects which are secured by ordinary 

 painting or enamel, but the deep blue of the sea or 

 the brilliant red of the sunset. These vases arc 

 produced by firing the porcelain after the enamel 

 has been put on, so that the enamel is baked on 

 Arable heat until it becomes a part of 

 the porcelain itself. 



A French potter named Palissy is credited with 



;ig first succeeded in doing this kind of work 



urope. It is related how he got the idea that, 



if he could paint vases and other pottery and then 



bake them in an oven sufficiently hot, he could get 



a coloring which would last, which would be deep 



and rich, and which would be a part of the pottery. 



started to experiment, but he had no way of 



telling just how hot his oven was, and no way of 



keeping the heat at a certain point. Year after 



