“I know you cannot count beyond ten, so I will tell you. Hold up your two hands. On both of them you have altogether ten fingers and thumbs. Very well. I now take this grain of sand--you hold it, Hoo-Hoo.” He dropped the grain of sand into the lad's palm and went on. “Now that grain of sand stands for the ten fingers of Edwin. I add another grain. That's ten more fingers. And I add another, and another, and another, until I have added as many grains as Edwin has fingers and thumbs. That makes what I call one hundred. Remember that word--one hundred. Now I put this pebble in Hare-Lip's hand. It stands for ten grains of sand, or ten tens of fingers, or one hundred fingers. I put in ten pebbles. They stand for a thousand fingers. I take a mussel-shell, and it stands for ten pebbles, or one hundred grains of sand, or one thousand fingers....” And so on, laboriously, and with much reiteration, he strove to build up in their minds a crude conception of numbers. As the quantities increased, he had the boys holding different magnitudes in each of their hands. For still higher sums, he laid the symbols on the log of driftwood; and for symbols he was hard put, being compelled to use the teeth from the skulls for millions, and the crab-shells for billions. It was here that he stopped, for the boys were showing signs of becoming tired. “There were four million people in San Francisco--four teeth.” The boys' eyes ranged along from the teeth and from hand to hand, down through the pebbles and sand-grains to Edwin's fingers. And back again they ranged along the ascending series in the effort to grasp such inconceivable numbers. “That was a lot of folks, Granser,” Edwin at last hazarded. “Like sand on the beach here, like sand on the beach, each grain of sand a man, or woman, or child. Yes, my boy, all those people lived right here in San Francisco. And at one time or another all those people came out on this very beach--more people than there are grains of sand. More--more--more. And San Francisco was a noble city. And across the bay--where we camped last year, even more people lived, clear from Point Richmond, on the level ground and on the hills, all the way around to San Leandro--one great city of seven million people.--Seven teeth... there, that's it, seven millions.” Again the boys' eyes ranged up and down from Edwin's fingers to the teeth on the log.