THREE:
THREE:Text-books, such as relate to construction, consist generally of examples, drawings, and explanations of machines, gearing, tools, and so on; such examples are of use to a learner, no doubt, but in most cases he can examine the machines themselves, and on entering a shop is brought at once in contact not only with the machines but also with their operation. Examples and drawings relate to how machines are constructed, but when a learner comes to the actual operation of machines, a new and more interesting problem is reached in the reasons why they are so constructed.
THREE:Well be a regular Sky Patrol! exulted Sandy. And watch what goes on while you do the control joband, that waynothing can go wrong! Not with the Sky Patrol over-seeing! Dick, too, spoke overconfidently.
TWO:Leona said nothing. There was a queer, strained look, half of admiration, on her face. But she uttered no protest, no denial.












