138 HEDGES, WINDBREAKS, SHELTERS, ETC. 



have another engagement. But I expect to visit 

 some of you another day, and see how you have 

 practiced on what I have written to you. I expect 

 some of you will have gone quite ahead of my ideas, 

 and will have in turn much to teach me. So at least 

 I hope. If my book is a total failure, I shall expect 

 you to tell me of it. And, hereafter, like a wise turtle, 

 I will keep my head under my own experiences. 



