This listing is for a 48 page - Methane Digesters For Fuel Gas And Fertilizer – Complete Instructions For 2 Working Models - 1973 Soft Cover. The color is more of a light orange rather than what’s shown in the photo.
Methane Digesters For Fuel Gas and Fertilizer, With Complete Instructions For Two Working Models -- by L. John Fry, Santa Barbara, Calif. 93103, © 1973, Eighth Printing (out of print). Excellent
This manual describes making and using methane -- biogas. Fry developed his techniques while running a pig farm in South Africa, designing the first full scale displacement methane plant. Good information on integrating biogas production with gardening and farming, and with pond-culture food production. Designs for a Sump Digester using 55-gal oil drums and an Inner Tube Digester. With thanks to Kirk McLoren.
"The farmer or rural homesteader can take a step toward ecological self-sufficiency by producing some of his fuel and fertilizer needs using a digester to convert local wastes. Total dependence on conventional fuels, especially in rural areas, is likely to become a serious handicap in the years to come as reserve shortages and specialized technologies hike the costs of fossil and nuclear fuels. But by producing energy from local resources, it is possible to be partially freed from remote sources of increasingly expensive fuel supplies." It made perfect sense then and it still does today.
The soft cover has minimal wear and is tightly bound. The outside back cover appears to have a light color water stain. The inside is almost like new without stains, rips or notations. 8th printing.
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