THE LABORATORY. IO9 



will be found in the chapter entitled " Recipes, Formulse, and 

 Useful Hints." 



Eacli student should make extended notes of all of his 

 work and should accompany it by illustrative drawings. 

 From an experience of several years, the writer regards 

 " note-books " as the poorest form in which to keep notes, as 

 in a short time several books are filled and it becomes an 

 interminable job to find any desired item. 



A far better way is to keep the memoranda, drawings, etc., 

 on separate sheets which can be arranged in portfolios and 

 envelopes after any desired system, thus greatly facilitating 

 reference and admitting of future interpolations. 



A word in regard to drawing may not come amiss. Most 

 persons have an idea that they cannot draw or learn to draw. 

 Nothing possesses less of truth. Any one with a little prac- 

 tice can make an intelligible drawing, though but few acquire 

 that skill and facility which are necessary for book illustration. 

 Almost every student whom the writer has seen enter a bio- 

 logical laboratory, has said that he or she could not possibly 

 draw and never could learn how. But those same students in 

 a very short space of time would produce creditable drawings 

 to illustrate their dissections. The great secret of drawing 

 is " patience." Drawing takes time, and the trouble with be- 

 ginners is that they want to hurry. No instruction is necessary 

 to enable a student to reproduce with more or less accuracy 

 the features of any preparation or dissection ; practice alone 

 will do it. 



Drawings will express far more than pages of description, 

 and whenever it is practicable they should be employed. 



