TABLE OF CONTENTS 



Microbiota of Sewage Treatment Plants and Polluted 



Streams. John N. Wilson 1 



Some Epidemiological and Biological Problems in Water-Borne 



Amoebiasis. Shih L. Chang 16 



Biotic Responses to Stream Pollution During Artificial Stream 



Reaeration. Alfked F. Baetsch and Waeeen S. Churchill .... 33 



A Study of Kraft Pulping Wastes in Relation to the Aquatic 



Environment. AVillis M. Van Horn 49 



Plankton as Related to Nuisance Conditions in Surface Water. 



James B. Lackey 56 



Preliminary Studies on the Viability and Dispersal of Coliform Bacteria 

 in the Sea. Bostwick H. Ketchum, Cornelia L. Carey, and 

 Margaret Briggs 64 



The Algologists' Part in City and Industrial Water Supply Problems. 

 Clarence E. Taft 74 



The Use of Copper Sulphate for Algal Control and its Biological 



Implications. John B. Moyle 79 



