PREFACE. y, 



A. Gulley, of Mississippi; Professors Latta and Troop, of 

 Purduo University, Indiana. 



The following list should bo added as freely quoted: Prof. 

 F. L. Scribner, Clifford Richardson and Dr. G. Vasey of 

 Washington; Dr. R. C. Kedzie, of Michigan; Dr. A. Gray 

 Prof. N. S. Shaler, and Prof. F. L. Storer, of Massachusetts i 

 Secretary W. I. Clmmberlain, now president of Iowa Agricult- 

 ural College; Mr. L. N. Bonham, of Ohio; E. S. Carman 

 of New York; Prof. Wm. Brown, of Ontario; Prof. G E 

 Morrow, of Illinois, and Mr. Do Laune, of England. 



For readi,.g portions of proof I am indebted to my col- 

 legues. Prof. A. J. Cook, Dr. Lewis McLouth, Prof E J 

 MacEwan, Prof. L. II. Bailey, jr., also to Prof. V. M. SpaukU 

 ing. of Ann Arbor, and Prof. F. L. Scribner, of Washington. 

 Ihorp & Godfrey, of Lansing, Mich., are credited with the 

 mechanical part of the wori.. 



A second volume is in preparation. This is to contain the 

 description of all known grasses of North America, 700 or 

 more species, with illustrations of one species in each genus 

 and m some cases more than one. Full notes in regard to 

 their value for cultivation will be given. A chapter on Geo- 

 graphical Distribution and other information likely to interest 

 the student of grasses will be presented. 



W. J. BEAL. 



Botanical Laboratory. ) 



Agricultural College, Mich . ( 



January, 1887. ) 



PREFACE TO THE SECOND EDITION. 



Ik the revision it has not seemed i.nportunt to roj.lace a few 

 of the generic nun.es by others that they mi^ht be uniform with 

 those of the second vohune, which was published in 1890. 1 refer • 

 to tlie following : C>,uodon, Ue,jen,ia, Exacjroslis, Lcersia, Oh,- 



