They might as well tell the boys: "Just take a minute's rest, my dears, will you? In a moment I shall be looking at my desk again, then you will be able to go on."
Face the boys, or you will be nowhere.
Always be lively. If you once let the boys go to sleep, you will never wake them up again.
Always look the same in face and person. Your moustache curtailed, your whiskers shaved, or the usual shape of your coat altered, will cause a revolution in your class.
Never show your temper if you have one, and keep the changes of your temperature for the benefit of your wife and family. If you once show your boys that they have enough power to disturb your equilibrium and interfere with your happiness, it is for them a victory, the results of which they will always make you feel.
If you are annoyed by a boy constantly chatting with his neighbors, see if he has a brother in the class. If he has, place them side by side, and peace will be restored. Brothers will sometimes quarrel in class, but have a quiet chat together, never.