March, 1902.] Proposed Algological Survey of Ohio. 



221 



Oe.d.o<jemLiL}Ti 



^csmids, 



leu 



Ttosioo 



'J^T-apa'inalcilaj 



Jte m a rj c<sLy 



J\ :liLa.-to?rt 



Chaeto-photCL 



(PleulococccLS 



--Mou^^ ctia. - jBrLilnch as uemunv 



SkETCHES Ir.EtlSTRATING COMMON GENKRA OF OHIO Al,G.5j. 



