He found the volume on the theory of monomolecular films and started to read with relish. Over coffee, at breakfast, Thomas made notations on the margin of the book with a pencil; checked some of the equations and though he found them balanced properly, the author was amiss in not considering the lattice-effect in his presumptions. No monomolecular film could follow that type of reaction simply because--well, it could follow it, but since the thing was to take place in a monomolecular film, the fission-reaction and the radiation byproducts that cause the self-sustaining nature could only be effective in a plane of molecular thickness. That meant a .999999% loss, since the radiation went off spherically. Fission-reaction might take place, but it would be most ineffective. Besides, the equations should have taken that into account. He stopped by the desk and wrote for a half hour, filling seventeen pages full of text and mathematics, explaining the error in the author's presumption. He sealed it up and mailed it with some relish. No doubt that letter would start a fight. He found his letter in the letter file and read it. It was a request to indulge in some basic research at a fancy figure, but Thomas was not particularly interested. He was thinking of another particular line of endeavor. He dropped the letter into the wastebasket. He went into the lab and took a look at his cyclotronic spectrograph. There was a letter hung on the front. Thomas opened it and read: Dear Isaac Newton: I don't particularly mind your laying out thirty-five hundred bucks for a mass spectrograph. Appropriating my high-frequency generator didn't bother me too much. Nor did your unsymmetrical wiring and haywire peregrinations in and about the two of them annoy (too acutely) my sense of mechanical and electrical precision. But the idea of your using the ##&&%!! spectrograph only once--just for pre-change calibration--makes me madder than mad! Sincerely, Tom Lionel, Consulting Engineer Thomas grinned boyishly and picked up the notebook on top of the high-frequency heater. It was Tom's, and the physicist riffled through it to the last-used pages. He found considerable in the way of notes and sketches on the cyclotronic spectrograph. Cut in size by about one quarter, the thing would be not only a research instrument of value, but would be of a price low enough to make it available to schools, small laboratories, and perhaps production-lines--if Tom Lionel could find a use for a mass spectrograph on a production line. Thomas grinned again. If it were possible, Tom would certainly have it included on _some_ production line, somewhere.