ROUGH-AND-TUMBLE ENGINEERING 



he can have. He lias learned that carelessness will get 

 i into trouble, and that to "forget" costs mom 



he fellow who said. "/: .'riVfc to run on 



read this book another did not see 



the little point v He was hunting for big theories, 

 scie: >ries, something he could not understand, 



:i't find them. He expected to find some 

 :t scheme to prevent a boiler from exploding, 

 and didn't notice the simple little statement, "keep water 

 in it." that was too commonplace to notice. He was 

 looking for cuts, diagrams, geometrical figures, theo- 

 ries for constructing engines and boilers and all that 

 sort of thing and didn't find them. Hence "It is no 

 to run an engine." 



this has been your idea of "Rough and Tumble 

 Engineering" forget all about your theory, and go 

 back and read it over and remember the little sugges- 

 tion- expect this book to teach you how to 

 build an engine. \\V didn't start out to teach you 

 anything of the kind. That is a business of itself 

 good engineer gets better money than the man who 

 !< them. Read it as if you wanted to know how 

 ii an engine anf 1 not now to build one. 

 Study the following questions and answers carefully. 

 Don't learn them like you would a piece of poetry. 

 hut study tVm. *cr of they are practical: make your- 

 Highly acquainted with the rule of measuring 



