Figure 6. — A portion of the recirculation system occupying the south wall 

 of the laboratory. The experimental pool, sump, pump, diatomaceous- 

 earth filter, and 500-gal fiber glass tank are shown from left to right. 



f r 



WATER TABtES 



n »-n 



FLOOR 

 DRAIN 



\:s:: 



.— i- 



f I ITER BOX 



'^^' 



^PUMP E 



\ 



soo 



GALLON 



STORAGE 



TANK 



*HOSE V 



PUMP EARTH- 



FILTER 



CyPCOIMFNTAt ' 



MID 



EXPERIMENTAl- 

 TANK 



Figure 7. — Schematic illustration of the recirculation system. The pool-reservoir, sump, pump, filter boxes, 



and delivery system form the basic system. Auxiliary components are the diatomaceous-earth filter, 500- 



gal storage tank, water tables, experimental tank, and saltwater well. 



