The third part of the Marine Algae of the Pacific Coast of North 

 America, comprising an account of the Melanophyceae or Brown 

 Algae, succeeding the accounts of the Myxophyceae and Ohloro- 

 phyceae, is presented without introduction or explanation, pending 

 the publication of the final part, which is in advanced preparation. 

 It is intended to issue with the completed volumes a statement as to 

 the principles followed, methods used, territory covered, sources of 

 information, material, etc., as well as to make acknowledgment to the 

 various authorities, students and collaborators who have been of the 

 greatest assistance in carrying out the long and laborious task. 



W. A. Setchell and N. L. Gardner. 



