PREFACE 



THE present volume, comprising papers on the cryptogamic 

 plants of Alaska, has been prepared under the general direction 

 of Professor Trelease, who distributed the material to spe- 

 cialists and has kindly read the proof. Owing to the number of 

 authors and their wide geographic separation, it has been im- 

 possible to secure uniformity of treatment. Acknowledgments 

 are due these several authors for the trouble they have taken in 

 preparing their respective papers. 



The delicate and appropriate chapter headpieces of this vol- 

 ume are the work of Mr. F. A. Walpole. 



The papers relating to the flowering plants (Phanerogams) 

 have been prepared under the general direction of Mr. F. V. 

 Coville, and will form two volumes, which are expected to ap- 

 pear in the early part of 1904. 



C. HART MERRIAM, 



WASHINGTON, D. C., Editor. 



May /, 1903. 



