WINTER EARTH STUDY. 475 



same time keeping the children interested and alert, is to 

 have a blackboard story, gained from the children as much 

 as possible, on some such subject as, "Mother's Helpers on 

 Wash-day." Tell who helped gather the clothes, how the 

 fire and stove and boiler helped warm the water, how the 

 water helped by dissolving and carrying away the dirt, 

 how the soap helped, how the clothes-line helped by keep- 

 ing the clothes spread out, how the sun helped by turning 

 the water into water dust, how the wind helped by carry- 

 ing away the water dust and vapor. Illustrations, though 

 very crude, representing the boiler, wash-tub, and clothes 

 on the line, will add much to the interest and impressive- 

 ness of the review. 



The following illustrates an individual paper on : 



WHAT MAKES WATER EVAPORATE. 



One day our teacher, Miss Morrow, took some water, and put in 

 the basin, and then set it on the table for two or three days. And 

 one day Miss Morrow passed it around for the children to look at. 

 And when we looked at it, it had all evaporated, and there were only 

 a few drops left. 



It had all dried up, and gone into steam. We cannot see the steam, 

 but we can see the water dust. 



The next time Miss Morrow took some water again, and put it in 

 the basin, and set it on a chair by the register, and it evaporated 

 quicker because there was more heat. The last time Miss Morrow 

 took some water again, and put it in a kettle, and placed the kettle on 

 a little stove ; and it evaporated still more quickly, because there was 

 more heat than anywhere else. 



EDITH BAMBAUER, 



Ramsey School, St. Paul, Minn. Third Grade. 



Step IV. The use of evaporation. Everywhere, in school, 

 at home, out doors, over land and over the lakes and rivers, 

 water is being turned into water dust and vapor, and is 

 going into the air. Why is water always evaporating? 

 Touch on the fact that evaporation helps the water to get 



