Wilbraham. Ah! and how far do you suppose that we have to travel from the start?
Easterly. Say fifteen days passed from our parting with Mr. Fetherston until we reached the valley, and I am pretty sure we made an average of thirty miles a day. But of course that was nearly all westing. I don't think that our furthest point could be quite as much as three hundred miles from the wire. I don't think that your own estimate can be much out of the way, but we are perhaps a little under the mark.
Wilbraham. Ah! if the figures are right the sum is easy; we ought to cross the wire about six o'clock.
Easterly. Yes, but look here; thirty miles an hour is possibly an overestimate of our speed; and three hundred miles is possibly an underestimate of our distance. Besides, we shall not be able to keep up our present speed. The wind is already falling, and may be against us in an hour or two. That would knock, say, ten miles an hour off the rate of speed at which we are now travelling.
Wilbraham. It might, but that is another over-estimate; we may fairly reckon on travelling all night at within five miles of our present rate of speed.
Easterly. I suppose so. Nevertheless, the chances are that if we stop the car about sunrise we shall still
