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NATURE STUDY AND Li Ml 



I may add to the above Miss Henry's solution of the 

 schoolroom dust problem. At the beginning of the school 

 year 19001901 all the feather dusters in the building 

 were collected and burned. Dusting cloths were pro- 

 vided, and two girls in each room were honored by being 

 appointed dusters for the month. They are given instruc- 



FIG. 196. THE HEALTH BRIGADE 

 Upsala Street School, Worcester, Mass. (Photograph by Katherine E. Dolbear) 



tion on dusting and on the care of the dust cloths and uni- 

 forms. The dusters come fifteen minutes early each 

 morning, take their cloths to the sink, moisten them, 

 wipe the desks' and furniture of their schoolroom, rinse 

 their cloths, and hang them up to dry. Once a week the 

 cloths are laundered. 



The result of the year's experiment was, not a case of 

 contagion in a school of 425 pupils during the entire school 



