Abstract: A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO.sub.2 surface, thus forming bonds ofCF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si (O--).sub.3over the entire frictional portion surface.

Abstract: A bowling game is made to be played on any flat, smooth table top. Nine bowling pins are arranged in a pattern on the table top in a 3.times.3 array. A ball is provided having one hemisphere made of lead glued to another hemisphere made of hard wood. The ball is spun toward the array of pins. Scoring is based upon knocking down a particular prescribed pattern of pins and being awarded the number of points corresponding to that pattern and varying between 5 points and 40 points. The first player to earn 100 points wins the game.

Abstract: A kickable toy having a base member and a means for increasing air resistance is provided. The base member has a flexible membrane defining a boundary confining a deformable material. The means for increasing air resistance is mounted on the base member for increasing air resistance of the kickable toy to decrease the speed of free fall of the toy in air.