2901. Those spoken of earlier [2843, 2850] think about filth, wherever they are. I spoke with the spirits and was prompted to tell them they are like hornets in their flight that always find out by smell alone-it is not known whether they do so by sight-where there is dung. They are brought to it by the odor, because the odor is pleasing to them, so the enjoyment of it draws them, and there they live. Therefore those spirits are brought by a kind of sense of smell, or something analogous to smell, to observe such things, which would otherwise have gone unobserved. 1748, 23 Aug.