Abstract: A composition for improving the combustion efficiency of an internal combustion engine. The composition includes a mixture of a hydrocarbon fuel and an organometallic soap selected from among several cerium-containing and ferric compounds. The cerium-containing compound or compounds increase the energy released during combustion of the fuel. The ferric compound or compounds coat an interior wall of a combustion chamber of the internal combustion engine to increase the power output of the engine by reducing the accumulation of residues deposited on the interior wall which interfere with the combustion of fuel.

Abstract: A folding booklet is disclosed having a booklet cover and one or more of booklet pages in which are formed a plurality of spaced apart longitudinal fold lines defining a plurality of longitudinal panels and a plurality of transverse fold lines defining a plurality of transverse panels. The longitudinal panels can be folded along the longitudinal fold lines to overlay one another and the transverse panels can be folded along the transverse fold lines to overlay one another. The cover can then be folded along a booklet cover fold line to completely contain the folded booklet pages.

Abstract: An eyeglass retainer that features an elongated flexible segment of linear cylindrical material having a first end and a second end. Each end of the material can be tied into a knot so that each knot forms a loop of the material. Each of the two knots can be slidably adjustable over the length of the material so that each loop can be decreased in diameter to tighten the loop around a temple of a pair of eyeglasses. The small diameter and transparency of the material reduce the visibility of the eyeglass retainer to diminish its contrast with a wearer's clothing.