At the investigation Nathanial suggested that the presence of a camera, introduced on the scene in a gentlemanly and courteous manner, was enough to cause almost frenzied unlocking and unzipping by even the most demure and prudish female. "Ladies," Nathanial said wisely, "love to have their bodies recorded for posterity." Oh, he was certainly a very evil and highly obscene old man--was Nathanial Evergood--if ever you saw one. But the full import of what his evil old soul and obscene little mind contained would probably escape the casual observer, unless he happened onto a tiny cubbyhole at the back of the rooms occupied by Nathanial. This was the sanctum sanctorum, so to speak, of his thin little heart, for here Nathanial Evergood guarded jealously a secret utterly beyond belief. He fancied himself to be something of an inventor. And he was, too--of a sort. His ardent and relentless pursuit of photographic subject matter during the years had led him into situations demanding full knowledge of his craft, from a technical rather than from an artistic point of view. Thus, this inventive turn of mind was given an able assist by his understanding of the theory, optics and chemistry of photography. And now, he was just putting the finishing touches to the most important project in his entire life. Basing his plan of action on the simple optical theory of astigmatism, Nathanial designed a lens. Astigmatism, he had learned, results in the human eye, as well as in manufactured lenses of certain formulae, in the failure of horizontal and vertical target lines to reach a common focus. So his lens was designed intentionally astigmatic, allowing focus to be brought on one group of target lines or another, but never on both simultaneously. To the front of the lens mount he added a front-surfaced prism and a filter, carefully ground and tinted internally the precise color complement of human flesh. He reasoned, quite accurately as it turned out, that the prism would gather all the colors of light together and converge them at the focal plane of the lens as pure white, thus eliminating all color. But, at the same instant, the complement filter replaced last the flesh color of the object focused upon, and subsequently recorded on film. Then, in one fell swoop, the lens allowed Nathanial to focus carefully on one group of target lines (in his case, the female form underneath its covering), automatically throwing an opposing group of lines out of focus (the covering over the female body, in his case). The prism was busily gathering together all color and converting it into pure white light, while lastly, the complementary filter replaced the color of flesh to the image, and finally to the photograph. You see the possibilities, of course. By replacing the normal lens of one fine camera with his invention, Nathanial Evergood was now equipped to photograph in rich, natural color the female form-divine, unfettered by any or all clothing.