14 PLANT PHYSIOLOGY. 



cesses of others. As to the more practical aspects of his 

 laboratory work, he is exact and neat in everything; he not 

 only keeps his own place and property in good order, but takes 

 a corporate pride in the appearance and condition of the 

 laboratory as a whole ; and he works in physical comfort and 

 with a feeling and an air of academic calm and leisure. 



For the profitable pursuit of a course in physiology, some 

 training in chemistry and physics is essential, a knowledge 01 

 German is extremely desirable, and some knowledge of zoology 

 and meteorology very advantageous. 



We may next briefly consider actual laboratory procedure. 

 It is essential that laboratory guides or outlines, to give direc- 

 tion and definition to the work, be placed before the students, 

 either as offered in this book or in some related form. The 

 materials for use in experiments are in some known place, and 

 a model or photograph of the more complex appliances is 

 placed at their disposal. They then make their own attempts 

 at the solution of the problems, aided only by the outlines. 

 Each student has of course his OAYII place in the greenhouse 

 and in the laboratory, all of which he is expected to keep in 

 the best of condition. All experiments should be set up in a 

 mechanically neat and exact, one may even say an artistic, 

 spirit. It is very profitable, even essential, to devote an hour 

 a week, when all students are present, to criticism of experi- 

 ments and comparison of results. 



To secure exactness, completeness, and permanency in the 

 students' Avork, very careful records both of procedure and 

 results should be made, For this purpose I have found most 

 .advantageous a good laboratory note-book, stamped with the 

 name of college and course, specially made with strong linen 

 binding, SJ by / inches, with 2OO numbered pages of the best 

 paper, ruled on the right-hand page for notes and unruled on 

 the left for drawings.* It may seem that so elaborate a book 

 is needless and that a cheap book, purchasable at any book- 

 store, is as good. But I have observed that the pride and care 



-Supplied by the Cambridge Botanical Supply Co., Cambridge, Mass. 



