"Do you know anything about them old violins?" Aaron asked anxiously.

Abe smiled in a superior way.

"Not a whole lot, Aaron," he said, but by the time he had finished his examination Aaron became convinced that his employer was indeed one of the cognoscenti. First Abe turned the violin upside down and scrutinized the scroll, neck, belly, and back. Then he blew into the "eff" holes; and wetting his finger he rubbed the varnish. For five minutes he pursued the tactics of Mozart Rabiner and even added one or two fancy touches on his own account, until at length he laid down the instrument with a profound sigh.

"Always the same thing, Shellak," he said; "people says it is a genu-ine and it ain't."

Aaron took up his violin and looked at it through new eyes.

"Why ain't it genu-ine?" he asked.

"I should tell you why it ain't!" Abe exclaimed. "If you would know what I know about them things, Shellak, you wouldn't ask me such a question at all. Do you doubt my word?"

"Why should I doubt your word, Mr. Potash?" Aaron said. "In the inside is the paper and that's all I know about it. So, if you would give me a hundred and fifty dollars, Mr. Potash, you could keep the fiddle, bow, case und fertig."

For some minutes they haggled over the bargain, and at length they closed at a hundred and twenty-five dollars, for which Abe gave Shellak his personal check.