A DEFENCE OF PLANETS
A book has at one time come under my notice called 'Terra Firma: the Earth not a Planet.' The author was a Mr. D. Wardlaw Scott, and he quoted very seriously the opinions of a large number of other persons, of whom we have never heard, but who are evidently very important. Mr. Beach of Southsea, for example, thinks that the world is flat; and in Southsea perhaps it is. It is no part of my present intention, however, to follow Mr. Scott's arguments in detail. On the lines of such arguments it may be shown that the earth is flat, and, for the matter of that, that it is triangular. A few examples will suffice:
One of Mr. Scott's objections was that if a projectile is fired from a moving body there is a difference in the distance to which it carries according to the direction in which it is sent. But as in practice there is not the slightest difference whichever way the thing is done, in the case of the earth 'we have a forcible overthrow of all fancies relative to the motion of the earth, and a striking proof that the earth is not a globe.'
This is altogether one of the quaintest arguments we have ever seen. It never seems to occur to the author, among other things, that when the firing and falling of the shot all take place upon the moving body, there is nothing whatever to compare them with. As a matter of fact, of course, a shot fired at an elephant does actually often travel towards the marksman, but much slower than the marksman travels. Mr. Scott probably would not like to contemplate the fact that the elephant, properly speaking, swings round and hits the bullet. To us it appears full of a rich cosmic humour.
I will only give one other example of the astronomical proofs:
'If the earth were a globe, the distance round the surface, say, at 45 degrees south latitude, could not possibly be any greater than the same latitude north; but since it is found by navigators to be twice the distance—to say the least of it—or double the distance it ought to be according to the globular theory, it is a proof that the earth is not a globe.'