IV PREFACE TO THE TRANSLATION. 



general readers, an introduction wherein is illustrated 

 the manner of using the keys of analysis in determining 

 genera is given, and a full glossary and iudex are added. 

 It is hoped also that the translation will thus be made 

 more suitable for use as a text-book in our Agricultural 

 Colleges, for which purpose the treatment of the struc- 

 ture, morphology, and physiology of grasses, given in 

 detail and fully illustrated in Part I, renders the work 

 especially well adapted. 



Those familiar with the German will notice that in 

 translation occasional liberties have been taken with the 



Thanks are due Mr. Charles E. Smith, of Phila- 

 delphia, for his kind assistance with the proofs, and 

 Dr. W. J. Beal, of Lansing, Michigan, and Mr. C. M. 

 McClung, of Knoxville, Tennessee, for their interest in 

 the progress of the work and material aid in its publica- 

 tion. 



F. Lamson-Scribner. 



University of Tennessee, 

 Knoxville, Feb. 1. 1890. 



