 Why does Mr. Henderson want to work for the children?
It is an uneasy privilege then, at least sometimes, to teach my old-fashioned brand of science to these children of a new age. "It has the purpose," I told her, "of teaching the members something about commerce and industry. They manufacture simple compositions like polishing waxes and sell them from door-to-door. Some groups have built up tidy little bank accounts which are available for later educational expenses." Marjorie put back her head and laughed, and I was forced to join her, for we both recognize that my understanding and "feel" for commercial matters—if I may use that expression—is almost nonexistent. Mr. McCormack is going to put up fifty dollars to buy any raw materials wanted Back in the old Ridgeville, fifty-odd miles to the south, we had our home almost paid for, when the accident occurred. When Ridgeville moved to its present site, so, of course, did we, which meant starting mortgage payments all over again. This was to be our headquarters and factory for the summer—a roomy unused barn belonging to the parents of one of the group members, Tommy Miller. Mary McCready was a big husky redhead of twelve, with a face full of freckles and an infectious laugh, and Tommy Miller, a few months younger, was just an average, extroverted, well adjusted youngster, noisy and restless, tee-shirted and butch-barbered. You're Dr. Matlack's son, aren't you? Healthy mice of the right strain," I explained to Tommy, "might be sold to laboratories. There was a pause, then Tommy inquired, "How do you sell it?" The parents had agreed to underwrite lunches at the barn and Betty Miller philosophically assumed the role of commissary officer. I'd forgotten all about organization, and that, according to all the articles I had perused, is most important to such groups. It's standard practice for every member of the group to be a company officer. Of course a young boy who doesn't know any better, may wind up a sales manager. Peter Cope waved it off by remarking that they'd each do what came naturally. It was Mary, finally, who advanced the thought of kites. Tommy, for example, wanted to put tooth powder into tablets that one would chew before brushing the teeth. These latter ideas had made unknowing use of some basic physics, and I'm afraid I relapsed for a few minutes into the role of teacher and told them a little bit about the laws of radiation and absorption of heat.
 The children are incredibly successful.
 The parents of the children work for the Commission and Henderson is scared of the Commission.  He needs the money to pay for his mortgage.  He does not want to work for the children. The children will work for Mr. Henderson.  The children are incredibly successful.