BERGEN'S 



ELEMENTS OF BOTANY 



REVISED EDITION 



By JOSEPH Y. BERGEN 

 Recently Instructor in Biology in the English High School, Boston 



Including Key and Flora for Northern and Central States. lamo, cloth, 283 + 257 pages, 

 illustrated, $1.30. Without Key and Flora, $1.00. 



Issued also in three special editions with a Key and Flora for each : Pacific Coast Edi- 

 tion, Southern States Edition, and Rocky Mountain Edition, $1.30 each. 



BERGEN'S " Elements of Botany," Revised Edition, is designed to 

 furnish a half-year course in the subject for students in secondary 

 schools. It covers all the ground which ordinary classes can traverse 

 in the time indicated, and presents only those topics which are essen- 

 tial to an elementary course in the science. 



It differs from the earlier editions of the " Elements " mainly in the 

 greater stress laid on the topics of ecology and cryptogamic botany, in 

 the somewhat abbreviated directions for histological work on seed plants, 

 and in the greatly improved quality of the illustrations. Minor changes 

 will be found on almost every page. 



THE BOOK IS CHARACTERIZED 



By the natural method of presentation, introducing the pupil first, as Professor Huxley 

 recommended, to the comparatively familiar forms and processes of plant life. 



By the sparing use of technical terms, employing these only when they are indispensable 

 for the sake of clearness or of brevity. 



By the treatment of the structures and the functions of plants consecutively, not in 

 widely separated portions of the book. 



By the intimate combination of laboratory work with discussion, taking pains, however, 

 not to tell the pupil, either in words or by means of illustrations, what he is to see 

 before he sees it for himself. 



By the accuracy of the illustrations in detail, the half tones being used only to give gen- 

 eral effects, never for minute organs or structures. 



By the fact that four special keys and floras have been prepared to accompany the text. 

 This allows the student in any part of the country to obtain practice in the determina- 

 tion of species of phanerogams, and to get a practical idea of their relationships and 

 classification by means of a simply written and inexpensive flora of his own region. 



NOTEBOOK TO ACCOMPANY BERGEN'S TEXT- 

 BOOKS OF BOTANY 



For general use in Botanical Laboratories or for Secondary Schools. Square 4to, paper, 

 144 pages, illustrated, 45 cents. In Biflex Binder, 75 cents. 



BERGEN'S "Notebook" was prepared with the particular view of 

 minimizing the amount of routine dictation for both teacher and 

 pupil without doing any of the latter's thinking for him. Not only will 

 it save time and trouble, but it will also lead the pupil to perform" neat 

 and accurate work. 



GINN AND COMPANY PUBLISHERS 





