Greenbriar is a straggling little town, built around a large common meadow. Mifflin's general plan in towns, he had told me, was to halt Parnassus in front of the principal store or hotel, and when a little throng had gathered he would put up the flaps of the van, distribute his cards, and deliver a harangue on the value of good books. I lay concealed inside, but I gathered from the sounds that this was what was happening. We came to a stop; I heard a growing murmur of voices and laughter outside, and then the click of the raised sides of the wagon. I heard Mifflin's shrill, slightly nasal voice making facetious remarks as he passed out the cards. Evidently Bock was quite accustomed to the routine, for though his tail wagged gently when the Professor began to talk, he lay quite peaceably dozing at my feet.
"My friends," said Mr. Mifflin. "You remember Abe Lincoln's joke about the dog? If you call a tail a leg, said Abe, how many legs has a dog? Five, you answer. No, says Abe; because calling a tail a leg doesn't make it a leg. Well, there are lots of us in the same case as that dog's tail. Calling us men doesn't make
