PETERS : CAUSES THAT PRODUCE "BALD-HEADED" KELP. 9 



but tentative answers to the problem. A longer period of 

 observation and through a whole season, as well as over a 

 larger territory, is necessary to verify or disprove these con- 

 clusions. 



Note. — The writer has spent three seasons at the Puget Sound Marine 

 Biological Station as a member of the Kansas party led by Professor 

 W. J. Baumgartner of the State University. To his unselfish interest the 

 opportunity for the above work was largely due. — R. P. 



2 — Univ. Sci. Bull., Vol. IX, No. 1. 



