muscles several times a day Varying Bodv Size The ability to vary apparent body weight was a more complicated matter As mentioned above, face dancers were bred for slender, almost frail body types When they needed to impersonate more robust victims, they made use of structures already present in the normal body- the celomic sacs Adult humans ha\e four major celomic sacs two pleural sacs, one pencardial sac, and one peritoneal sac They may be pictured as closed, deflated balloons within the body cavity, surrounding but not containing the inner organs If one were to FACE DANCERS 208 FACE DANCERS drape a large, deflated balloon over one's fist, it can be seen how the balloon (the sac) can surround but not contain the fist (the organs) In the face dancer embryo, the pericardia! sac {more accurately, the primor-dium of the sac) was caused to migrate upward to a position beneath the skin of the neck, the pleural sacs retained their relative positions, but were caused to develop out side rather than inside the nb edge, just below the surface of the skin After puberty when the face dancer had attained maximum growth tubes of artificial tissue were implanted connecting the respira tory system to the celomic sacs The tubes contained internal valves whose normal position was closed The face dancer opened the valves by muscular action and, by closing the glottis, pumped air from the lungs into the expanding sacs much as one might puff up one's cheeks When the desired size had been achieved, the valve muscles were relaxed and the valves closed, trapping the air inside the sacs until such time as the dancer decided to "deflate " Pumping varying amounts of air into the plearal sacs alone gave an accurate appearance of breasts of the desired size As a side note, it might be mentioned that these extra air chambers gave the dancer an advantage in the water The increased buoyancy of the trapped air made the dancer unsuitable The celomic sacs, when inflated, increased the apparent bodily size of the face dancer Similar small pouches artificially produced within the layers of cheek muscle performed the same disguising function fof the face The overdeveloped muscles along the spine gave a permanent appearance of obesity from the rear, ami the size of the arms and legs could be increased somewhat through controllable edemas, although the functioning of this last effect if not fully understood, nor was it as swift and as reliable as the others This method was a relative weak spot in the face dancer's disguise although the face dancer may have looked tiks he weighed 120 kg, he in fact remained at his normal body weight, perhaps 55 or 60 kg Moreover, the use of the celomic sacs was one reason why face dancers were never females, nor even true hermaphrodites but rather immature sterile males in the normal female, the uter ine tubes open into the peritoneal sac Varying the face Manipulation of the facial features was the face dancers most s