28 AGRICULTURAL CHEMISTRY 



numbered and answered in the order asked. Write out 

 each experiment at the time it is performed ; and while 

 the work is in progress, watch it and think about it. Do 

 not leave or neglect an experiment. When the experi- 

 ments are performed as called for from day to day, the 

 labor of preparing the daily recitation is considerably 

 lessened, and less effort is required to obtain a clear idea 

 of the subject. The note-book should be kept in a neat 

 and orderly way. Careful attention should be given to 

 spelling, English, and punctuation. Always have the 

 note-book in condition for examination if the books are 

 called for without notice. The instructor will mark all 

 errors, and the student should correct these errors. A 

 note-book with errors that have been corrected, represent- 

 ing the student's individual w 7 ork, is much to be preferred 

 to a note-book, copied from some other student, and hav- 

 ing but few errors. Each student has an individuality 

 which always marks his work, and whenever copying of 

 experiments is resorted to, it is detected by the in- 

 structor. The student who copies from some one else 

 only cheats himself, and usually fails to pass his exam- 

 inations. 



32. Breaking of Apparatus. If due care is taken in 

 performing the experiments, there will be but little break- 

 age of apparatus. In case an accident occurs, clean up 

 the broken pieces at once and place them in the waste jar. 

 If a liquid is spilled,, wipe it up with a sponge, using 

 plenty of water. If a strong acid is spilled, a little dilute 

 ammonia should be used in the final washing. No com- 

 bustible materials should be placed in the desk, and the 



