The Living Filter' Reeyding Study (Continued from Page_l6) than trees alone and help to irgamc mulch more timckly maintain the desirable condi- TRUCK LOAD SALE ON ACWAY CORN CRIBS 5x5 GAUGE BAR MESH CRIB SIZES AVAILABLE 750 and 1100 Bu. Capacity 13’ -9” Diameter 1000 and 1500 Bu. Capacity 16’ -8” Diameter ACCESSORIES AVAILABLE Corn Diverter - Roof Ladder FIRST COME - FIRST SERVED ORDER TO-DAY (LIMITED SUPPLY) Call 397-4761 Ask for Fred Kerlin or Harold Kinsey We also can supply your needs for building your own corn crib welded wire, hardware cloth, creosoted lumber, creosoted poles, steel and or alumimunroofing, nails, silo or snow fence, etc. BEE-LINE SUPPLY CENTER Hjgjflß, SALE ENDS OCTOBER 17 REASONS WHY MORE FARMERS PREFER THE AGWAY GREEN DOOR BAR MESH CORN CRIBS 1. Galvannealed Wire Z. Steep Pitched Roof 3. Easy Erection 4. Easy Loading and Unloading 5. Positive “Safety Locking” of all sections 6. Tested Under Extreme Load Conditions 7. Excellent Basic Design 8. Reliable Manufacturer, (Foley & Lavish Engineering Co.) Vent Stack tions produced by the sludge. Spoil banks might become garden spots and acidic runoff into streams a major pollu tant in the eastern United States stopped at the source. Two hundred and fifty tons of spoil were brought to The Living Filter area on the' Penn State campus. Dumped into huge planters, it was seeded with trees, grasses and legumes, then spray-irrigat ed with varying combinations of liquid digested sludge and sew age effluent. The results, in two growing seasons, have been-astonishing. But creators of The Living Filter are by no means ready to wind up their research. New studies are under way to define the more subtle efforts of add ing fifty to one, hundred inches of wastewater, annually, to a specific natural environment. These include studies of wild life, vegetation changes-, and various plant, insect, mammal and microbial interactions. “The technique is operation al now,” says one scientist, “both for farmlands ahd forest ed areas. But much more needs to be known.” “The Living Filter does pro vide the means for many cities to dispose of sewage without defouling the environment. “But m'v the-rush to make a spray-irrigation system opera tional many problems are going to arise. We at Penn State feel Lancaster Farming, Saturday, August 14,1971—1' we must continue our experi ments so we will be able to an ticipate and provide solutions to those problems.” The federal government evi dently shares this feeling. The Penn State Waste Water Reno vation and Conservation Pro ject has been given a two-year extension grant by the Interior Department’s Office of Water Resources to continue studies on the spoil bank project and the Office of Water Quality of the Environment Protection* Agency is supporting research to improve the nitrogen-remov ing capacity of The Living Fil ter. My Neighbors “I have to take mine home to have my wife sign it.” [7