The second part of the Marine Algae of tlic Pacific Coast of Nortli 

 America, comprising an account of the Chloropliyceae or Green Algae, 

 succeeding an account of the Myxophj'ceae, is presented without intro- 

 duction or explanation, jiending the publication of the other two 

 parts which are 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 tlu' long and laborious task. 



W. A. Sktchei.i, ninl \. 1>. Gakon'Ek. 



