phrase about the moon and green cheese remains a good example of this imagery of eating and drinking on a large scale. The same huge fancy is in the phrase "if all the trees were bread and cheese," which I have cited elsewhere in this connection; and in that noble nightmare of a Scandinavian legend, in which Thor drinks the deep sea nearly dry out of a horn. In an essay like the present (first intended as a paper to be read before the Royal Society) one cannot be too exact; and I will concede that my theory of the gradual vire-scence of our satellite is to be regarded rather as an alternative theory than as a law finally demonstrated and universally accepted by the scientific world. It is a hypothesis that holds the field, as the scientists say of a theory when there is no evidence for it so far.
But the reader need be under no apprehension that I have suddenly gone mad, and shall start biting large pieces out of the trunks of trees; or seriously altering (by large semicircular mouthfuls) the exquisite outline of the mountains. This feeling for expressing a fresh solidity by the image of eating is really a very old one. So far from being a paradox of perversity, it is one of the oldest commonplaces of religion. If any one wandering about wants to have a good trick or test for separating the wrong idealism from the
