PREFACE Vv 
rate the value of a complete laboratory equipment, but merely 
to emphasize the fact that the lack of it, while a disadvantage, 
need not be an insuperable bar to the successful teaching of 
botany. It is, of course, taken for granted that in schools pro- 
vided with a suitable laboratory outfit, teachers will be pre- 
pared to supplement or to replace the exercises here outlined 
with such others as in their judgment the subject may demand. 
There are as many ideals in teaching as there are teachers, and 
the most that a textbook can do is to present a working model 
which every teacher is free to modify in accordance with his 
or her own method. 
The writer takes pleasure in acknowledging here the many 
obligations due to Professor Francis E. Lloyd, of the Botanical 
Department of the Alabama Polytechnic Institute, at Auburn, 
Ala., for his valuable aid in the revision of the manuscript, for 
the highly interesting series of illustrations relating to photo- 
tropic movements, and for advice and information on points 
demanding expert knowledge which have contributed very ma- 
terially to whatever merit this volume may possess. 
Other members of the Auburn faculty to whom the author 
feels especially indebted are Mr. C. 8. Ridgeway, assistant in the 
Botanical Department, Professor J. E. Duggar, of the Agricul- 
tural Department, and Dr. B. B. Ross and Professor C. W. 
Williamson of the Department of Chemistry. Acknowledg- 
ments are due also to Professor George Wood of the Boys’ High 
School, Brooklyn, for suggestions which have been of great 
assistance in the preparation of this work; to Professor W. R. 
Dodson, of the University of Louisiana, for illustrative material 
furnished, and to Professor William Trelease for the loan of 
original material used in reproducing the beautiful cuts from 
the Reports of the Missouri Botanical Garden, credit for which 
is given in the proper place. 
For original photographs and drawings by the author, and 
familiar selections from well-known works, which can be gen- 
erally recognized, it has not been thought necessary to give 
special credit. " 
. FL ANDREWS. 
AUBURN, ALABAMA. 
