Abstract: A golf club includes a club handle, a club head including a series of spaced apart club head segments having segment forward faces collectively forming a club head forward face for striking a ball and being separated by substantially parallel club head slots oriented relative to the club handle to be substantially parallel to the direction of club swing so that air passes directly into and through the club head slots as a user swings the club, permitting the user to swing the club with greater speed and therefore to strike a ball with greater force, and a spine structure interconnecting the club head segments. The spine structure preferably extends transversely relative to the club head segment. The cross-sectional shape of the spine structure preferably is generally elongate in the direction of a club swing.

Abstract: A pet litter composed of limestone (preferably, dolomitic limestone) particles in the size range of 0.0001 mm to 4.75 mm which clump readily when contacted by pet urine, particularly cat urine.

Abstract: A pet litter composed of limestone particles in the size range of 0.0001 mm to 4.75 mm which clump readily when contacted by pet urine, particularly cat urine. The particle size is typically between 0.6 mm and 1.18 mm. In addition, a thickener that may be digested by cats may be added to the limestone base to enhance the clumping properties of the litter. The composition can range from 80% limestone particles:20% thickener to 98% limestone particle:2% thickener. A typical composition is 98% limestone particles and 2% thickener.