TABLE OF COOTENTS 



Page 



Introduction 1 



Materials and methods 2 



Explorations 3 



The experiment 5 



Results 6 



Discussion and conclusions 



Sample size 6 



Electrical treatments 7 



Summary 7 



Acknowledgments 8 



Literature cited 8 



Appendix 9 



LIST OF FIGURES 



No. 



1 Plan of experimental tank 2 



2 Voltage gradient pattern in experimental area 3 



3 Field polarity relations of a totally energized array . . 4 



4 Sequential energizing with the positive polarity 



always upstream 4 



5 Relative fish-guiding effectiveness of three methods 



of energizing an electrode array 6 



6 Relation of standard deviation of percent effective- 



ness to aversige number of fish downstream 6 



ill 



