58 



LIMNOLOGY, WATER SUPPLY AND WASTE DISPOSAL 



would never have noticed them. Mendota had one extremely bad condi- 

 tion, a particularly nauseous population of Gleotrichia. 



Table I also indicates to what group these abundant organisms be- 

 longed. The only animal blooms were flagellates and ciliates although no 

 account of copepod populations was taken. Animals were not a nuisance. 



TABLE I 



The Number, Composition and Occurrence of Blooms During a Two-year Survey 



