Lessons in the School-yard. 137 



eaves of the house. What do you see here ? Why do these 

 hollows come here ? What has it left behind ? Let us find 

 where the water ran away from the house. Who can find 

 the place ? What makes you think this is the place where 

 the water ran? Yes, it has left a little channel in the 

 ground. The little stream that ran away from the side of 

 the house did some work, didn't it ? Every little stream 

 has its work to do. 



FIG. 34. DRAINAGE OF SCHOOL-YARD. 



Let us follow this little channel and see where it goes. 

 What made it bend here, Freddie ? Why did it go so 

 straight here, Fannie? Why did it get larger here, Josie ? 

 Now we will follow it. Here it is quite large. Why is the 

 coarse sand left here and the fine sand carried farther 

 down ? Georgie, take this stick and see where this little 

 pond is deepest. Why is the fine sand piled over there ? 

 Where is the coarse sand ? Here is a weed dug out by the 

 little stream. Let us see if we can draw on our slates the 



