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Show "Walking- on the Ceiling. Few people, probably, know what It Is that enables Hies to walk on tho celling. It has been supposed that their ability to do so was due to the fact that each of tholr feet is a miniature air-pump. This theory was found to bo unsound, and it was then explained that tho feat was modo posolblo by means of a vIbcoiis sub-utanco sub-utanco which oxuded from the hairs on their feet. This theory also was abandoned aban-doned as being only partly accountable for tho facts, and the preferred explanation explana-tion Is thut tiles are enabled to walk up-sldo up-sldo down on nmooth substances by tho I help of capillary adhesion. An lnvestlga-1 lnvestlga-1 tor has found by a series of nice calculations calcula-tions such as tho weighing and measuring of hairs that a ny would be upheld by cupillary attraction were It four-ninths as heavy again an It is. Each Hy Is supposed sup-posed to be furnished with from 10,000 to 12,000 mlnuto foot-holra; those exudo an oily fluid, and It Is beeause of the repulsion between a watery surface and thin oily liquid that a lly llnds It difficult to mount O. &zmvinl glRSHr Harpiir"ii ,WekJyf |