LABORATORY PRACTICE 



309 



formed. Careful attention should be given to the spelling, language, 

 and punctuation, and the note-book should represent the student's in- 

 dividual work. He who attempts to cheat in laboratory work by 

 copying the results of others only cheats himself. Care should be 

 exercised to prevent anything getting into the sinks that will clog 



FIG. 51. Balance and Weights. 



the plumbing; soil, matches, broken glass, and paper should be de- 

 posited in the waste jars. The student should learn to use his 

 time in the laboratory profitably and economically. He should ob- 

 tain a clear idea of what he is to do, and then do it to the best of 

 his ability. If the experiment is not a success, repeat it. While 

 the work is in progress it should be given undivided attention. 



