 Natives of that particular area polished the stones by some method or their own. I never could discover how they did it. That's very interesting, General. Well, I guess I'd better get back to work. Oh, by the way, Mr. Thurston, I'm having a little dinner party here at my place this evening. I'd like to have you join us. Fine. What time? Oh, let's make it eight o'clock. All right, General. I'll see you at eight.