RECOMMENDATIONS 



The following recommendations are made 

 for future laboratory experiments in lead- 

 ing adult squawfish within a direct-current 

 sequentially pulsed electrod array using 

 electrodes of 1/2-inch diameter with 18 

 inches between rows and 17 inches between 

 electrodes: 



1. Future experiments should be 

 limited to the optimum values of potential 

 and pulse frequency: 50 volts, and 2 pulses 

 per second, respectively, found in these 

 experiments. 



2. The possibility of an effect from 

 pulse duration should not be overlooked. 



In future experiments, a range of values of 

 shorter duration than 10 milliseconds and 

 longer duration than 30 milliseconds should 

 be systematically investigated in combina- 

 tion with the optimum potential and pulse 

 frequency values. 



3. The cause of the significant dif- 

 ference between directions of the electrical 

 fields should be explored. If this phenom- 

 enon is peculiar to the laboratory, it is 



of little general interest. If it is due 

 to a variable which might also operate in a 

 field control installation, the effects of 

 this source of variation should be estimated. 



15 



INT.DUP.,D.C.59- jjj jj 



