viii PREFACE 



(2) Require simple, accurate drawings of the essential 

 features of each specimen. (3) Label the different parts 

 of the drawings, upon the sheet. (4) Do not require long 

 descriptions of the specimens studied, for the student 

 needs more to see and study plants than to attempt to 

 write about them. (5) Do not ask for "conclusions," 

 for the student has not yet enough knowledge of plants 

 to make generalizations. (6) The exact name of the 

 plant, or part of plant studied should be written upon 

 the sheet of drawings. 



It remains only for us to say that while the junior 

 author originally prepared Chapters I to V, and the senior 

 author the remainder, all have been gone over again and 

 again by both of us so that we are both responsible for 

 what is here set forth. We hope that this presentation 

 that has approved itself to us in our classrooms and 

 laboratories may be equally helpful in those of other 

 teachers of Botany in the Colleges and other high 

 schools of the country. 



THE AUTHORS. 

 May, 1914 



