Possible Injluence of the Earth's Magnetic Field 167 



with the not infrequent intersection of the enriched bacterial 

 zone with the bottom muds as the result of high ocean currents 

 produced by storms. 



EXPERIMENTAL WORK 



Only a limited amount of experimental work can be done 

 in the laboratory to check the above hypothesis and a preliminary 

 experiment was performed as a feasibility test. A cell was con- 

 structed of clear plastic as shown in Figure 4. Water was circu- 

 lated in a closed circuit through the tubes "a b." The side arms 

 "c" and "d" were plugged with agar containing a universal pH 



Direction of water motion 



Agar plug 



Agar plug 



Magnetic flux directed Into tlie 

 poper at the intersection 



Fig. 4. Experimental cell showing effects of magnetic field perpendicular 

 to the center as indicated by ion trap side arms. 



