248 Brown : Algal periodicity 



Phormidium Kiitz. 



temtc (Menegh.) Gom. Edge of pond no. 2, 



14 My to 26 J '07. 

 incrustatnm cataract or urn (Naeg.) Gom. Upper 



M 



Arthrospira Stizenb. 



ji 



j 



Edge of pond no. 4, 



Rivulariaceae 



Calothrix parietina (Naeg.) Thur. {Isactis caespitosa 

 Wolle.) 



Chroococcaceae 



Merismopedia Meyen 



convoluta Breb. Pond no. 2, 27 F '07. 



Indiana University, Bloomington, 

 Indiana, August 1, 1907. 



