340 



Junior Naturalist Monthly, 



Which would be deposited first by a river, sand or clay? Do you 

 know of any stream or creek that has a sand bottom in places and a 

 clay bottom in other places? In which place does the water run 

 faster? What is the name of the creek? 



Experiment III. — Put some pieces of lime in a bottle of water. 

 Shake it and let it stand about a day. Pour off the clear water into 

 another bottle. We will call this lime water. Now put a little clay 

 in each of two bottles of water. To one bottle add some lime water. 

 Let the bottles stand for an hour or more. What happens? We 

 learned in the fii'st experiment that the large sand particles sank 

 more quicklj^ than the small clay particles. The lime made the clay 

 particles stick together so that they were larger and sank. Do the 

 farmers in your district use lime on their soil? Do you see one way 

 in which it would do good? Do you think that lime would be likely 

 to do as much good on a sandy soil as on a clay soil? There are 

 some other ways in which lime does good. Perhaps you will find 

 them out sometime. 



When you send in your dues, tell Uncle John about your experi- 

 ments and see how many of the questions you can answer. 



