From the first he blocked the way for Peter and Nat, not only by refusing to pass on to them any information, but by influencing the other men to follow his example. Whether he feared Peter Strong might usurp the vacant foremanship, or whether he simply cherished a grudge toward the lad because of his previous good fortune, it was impossible to discover. Whichever the case, his attitude was, from the moment the boys set foot in the new tannery, one of complete antagonism. Had it not been for Peter's agreement not to intrude his personal grievances at home it would have been easy to appeal to his father to straighten out the difficulty. But Peter would not for a moment consider this means of escape. Therefore he and Nat struggled on by themselves, picking up what scraps of information they were able. Try as they would they could wring from the workmen only the most meager facts about making patent leather. They did succeed in finding out that the shiny varnish which gave it its finish was compounded in an isolated brick house in the factory yard where, after the ingredients had been carefully measured out, the mixture was boiled at a tremendous heat in great kettles. The formula for this dressing was a secret and was the result of many chemical experiments. All Peter and Nat could learn was that there was oil and Prussian blue in it, and something else with a stifling odor which caused it to dry quickly. No one was allowed in the room where, in the intense heat, the mixers--almost naked--toiled amid the clouds of steam which rose from the bubbling kettles. After the liquid had reached the necessary degree of temperature it was poured out into tanks where it was prevented from settling by being constantly agitated by the gentle motion of revolving paddles. Here it was kept until taken to the "slickers" to be used. "And the reason that the building stands off by itself," declared Nat to Peter one day, "is because there is danger of the oil and stuff in the varnish taking fire or blowing up; I found that out from one of the men to-day. In that other low building off by itself are stored the supplies for making the varnish and that place has to be isolated too for the same reason." "Good for you, Nat! We've gained one point anyhow. Did you find out anything else?" "No. When the man saw that I was really interested he wouldn't tell me anything more. There is, though, a nice old Irishman--a friend of Carmachel's--here somewhere. I met him once at noon time over at the park. Maybe he will help us."