FOREWORD 



In 1920 the Wisconsin Geological and Natural History Survey is- 

 sued the first part of a report on the plankton algae of the inland 

 lakes of Wisconsin^ by Dr. Gilbert M. Smith. This report included 

 all of the plankton algae, except the desmids and diatoms. 



The present volume comprises the second part of this report, and 

 includes the Desmidiaceae. A third part, including the Bacillarieae, 

 is in preparation and will complete the investigations of the algae of 

 Wisconsin lakes. The material has been sent for study and report 

 to Mr. Fr. Meister, of Zurich, Switzerland. 



The present report is published as one of the scientific studies of 

 the University of Wisconsin as well as a bulletin of the Survey. The 

 arrangement is made in accordance with Sec. 36.26 of the Wisconsin 

 Statutes. It is especially appropriate that this particular bulletin 

 should be printed by the University since Dr. Smith is associate pro- 

 fessor in the department of botany and the report has been prepared 

 in connection with the work of the department. The report is listed 

 as Bulletin 57, Part 2, in the publications of the Survey, and as No. 

 1270 in the University Bulletins. 



E. A. BiRGE, 



President, University of Wisconsin, 

 President. Commissioners, Wisconsin Geological 

 and Natural History Survey. 



Madison, May 12, 1924. 



'Phytoplankton of the Inland Lakes of Wisconsin. Part I. Wis- ..-^^ 

 cousin Geol. & Nat. Survey. Bull. No. 57; Sci. series, No. 12. \l / 

 Pp. 1-243 ; PI. 1-51. Madison. 1920. 



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