GENERAL DIRECTIONS 



Each student will need a notebook kept for this purpose alone. 

 The notebooks will be taken up and examined at intervals. 



Students are to work in pairs but each student is to observe 

 the results of every experiment himself. In some cases it will 

 be necessary for the students to observe experiments performed by 

 the instructor. In this case each student is to keep notes exactly 

 as when he performs the experiments himself. 



The notes should include an account of the apparatus, prepara- 

 tions made, etc., a statement of what is done in carrying out the 

 experiments or observations, a statement of the results, and finally 

 of what the experiments show. While the notes should not be too 

 voluminous, there is much greater likelihood of erring on the side 

 of making them too brief than too long. Complete sentences should 

 always be used and a connected account given, that will be perfectly 

 intelligible to a reader. Sketches, or better, diagrams, of apparatus, 

 figures of structures, etc., should be given wherever possible; they 

 are more important and take the place of long descriptions. 



Any pertinent matter in the way of explanations, etc., which 

 the student desires to have on record may be written in the book, 

 but should be distinguished from the results of his own observa- 

 tions, experiments, and reasoning by being enclosed in parentheses. 

 The instructor will then understand that such matter is not put 

 forward as original results. 



Enter into each experiment in the spirit of research. Always 

 read the directions carefully and obtain an idea of the general mode 

 of procedure and purpose of the experiment. Do not call upon 

 the instructor at every hitch but endeavor to overcome the difficulty 

 yourself. If you suspect the result of your experiment incorrect 

 consult the instructor before repeating it. Remember that the value 

 obtained from a laboratory course will depend on your own zeal 

 and ingenuity. 



In Physiology, as in any experimental science, the best results 

 are only obtained if the apparatus is in good working condition and 

 clean. Students should never allow liquids, spilled on the table, 

 or apparatus to remain there, and before leaving the laboratory, 



