OF EDUCATION 1 3 



After some study and experimenting with mud from 

 several places a sample was found which contained 

 a little clay mixed with the sand, and this became 

 so hard and firm on drying that it lasted a long time. 



These little occasional improvements of many kinds 

 continued for centuries, slowly improving the house, 

 increasing the cost, and making the architect's work 

 more complex. 



Thus it has been with every branch of art and 

 science from the rudest beginning, and thus it will 

 continue, for every branch is progressive. 



