But if they did n't mind instantly , they were sure to have their ears soundly boxed , and sometimes were sent back to the house without a taste of the sweet , tender , young clover of which they were so fond . After a few lessons of this kind , they found out that it was always best to obey instantly , and then Johnny began to teach them other things , things which it is very important that every Chuck should know . First , there were signals . When Johnny whistled a certain way , it meant `` A stranger in sight ; possible danger ! '' Then each little Chuck would sit up very straight and not move the teeniest , weeniest bit , so that from a little distance they looked for all the world like tiny stumps . But all the time their sharp little eyes would be looking this way and that way , to see what the danger might be . After a while Johnny would give another little whistle , which meant `` Danger past . '' Then they would once more begin to fill their little stomachs with sweet , tender , young clover . Sometimes , however , Johnny would whistle sharply . That meant `` Run ! '' Then they would scamper as fast as they could along the nearest little path to the house under the old apple-tree in the far corner , and never once look around . They would dive head first , one after the other , in at the doorway , and not show their noses outside again until Johnny or Polly Chuck told them they could . Then there was a still different whistle . It meant `` Danger very near ; lie low ! '' When they heard that , they flattened themselves right down in the grass just wherever they happened to be , and held their breath and did n't move until Johnny signaled that they might . Of course , there never was any real danger . Johnny was just teaching them , so that when danger did come , as it surely would , sooner or later , they would know just what to do . It surely was a funny little school , and sometimes Sammy Jay had hard work to keep from laughing right out . XXIV SAMMY JAY PROVES THAT HE IS NOT ALL BAD Sammy Jay had n't had so much fun for a long time as he found in watching the funny little school in Farmer Brown 's old orchard , where Johnny Chuck was teaching his three baby Chucks the things that every little Chuck must learn , if he would grow up into a big Chuck . When they had learned to mind without waiting to ask why , and had learned the signals which told them just what to do when danger was near , Johnny began to lead them farther and farther away from home .
He took them up XXXXX the old stone wall and showed them how to find safe hiding-places among the stones .
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