Schauberger
"Another very interesting phenomenon is demonstrated by the emergence of mealworms. If a vessel containing meal is placed in a dry, warm spot, then only a few worms come alive, or none at all. In order to obtain a greater quantity and better quality of worms, an old woollen cloth or a bone is placed in the meal and the lid closed. The increase in the worm population is caused by the introduced third category of carbone whose origin stems from a more complex group of vegetable matter than the meal." [Our Senseless Toil, page 30] underline added