“Is water level, or is it not?” was a question once asked of an astronomer. “Practically, yes; theoretically, no,” was the reply. Now, when theory does not harmonize with practice, the best thing to do is to drop the theory. (It is getting too late, now, to say “So much the worse for the facts!”) To drop the theory which supposes a curved surface to standing water is to acknowledge the facts which form the basis of Zetetic philosophy. And since this will have to be done—sooner or later,—it is a proof that the Earth is not a globe.