The following paper on the Liverworts (Hcpaticae) of Alaska, by 

 Prof. Alexander W. Evans, of Yale University, was originally pub- 

 lished in the Proceedings of the Washington Academy of Sciences, 

 vol. n, pp. 287-314, Oct. 10, 1900. It is here reprinted from the 

 same electrotype plates, so that it may be quoted exactly as if it were 

 the original. The original pagination has been preserved and trans- 

 ferred to the inner or hinge side of the page, where it is enclosed in 

 brackets, thus [288] ; while the consecutive pagination of the present 

 volume has been added in the usual place. In the plates the original 

 numbers and running headline, slightly abbreviated, have been pre- 

 served [in brackets], while the volume designation and serial plate 

 numbers have been added in the usual place. The original text refer- 

 ences to the plates are unchanged. The present headpiece and title 

 have been substituted for the running heading of the Academy's Pro- 

 ceedings and the original title, which was : Papers from the Harri- 

 man Alaska Expedition, v. Notes on the Hepaticce collected in 

 Alaska. No other alterations have been made. 



The author desires to record the following corrections : 



Page 363 [309], ninth line from bottom, for ' Web. & Mohr ' read Wahl. 

 Pages 368-372 [314], explanation of plates, have been divided and corrected 



to face the plates to which they relate. 



EDITOR. 



134) 



