Electric storage heaters. Types of lighting. Living beneath power lines. Subterranean streams are where he feels most ill. Ionization under beds of cancer patients.
Gypsies are healthier.
Tracing a buried pipe, and how to locate ley lines from standing stones, nuclear submarines, microwave towers, etc., using divining rods. Grids of natural earth energies on the planets surface. Checking you house for unhealthy ley lines and some ways to eliminate them. Black spirals, crop circles and demonic attack. Two cows have their backs broken by unknown energy in Blairgowrie.