Strings (tennis) be more durable than many other types of strings due to its outstanding tension retention. This may help to offset the high initial cost. The use of a dense string pattern also generally improves the longevity of natural gut. Natural gut is produced by drying fibers extracted from a part of the cow intestine called the serous membrane, or serosa, which contains collagen designed to withstand the stretching and contraction of the intestine. It is this elasticity that makes the fibers useful for tennis string. Sheep intestines have also been used for racquet strings in the past. The first natural
Catgut (horse) Catgut's only race away from Newmarket. Catgut did not run again until the First October meeting, when she finished second of the three runners in a Town Plate over the two-mile "Ditch In" course, beaten by Lord Exeter's filly Dulcinea. At the Second October meeting two weeks later, Catgut was assigned a weight of 97 pounds in an Oatlands Stakes, a handicap race over the Bunbury Mile course. She was made second favourite at odds of 3/1 but finished unplaced behind the four-year-old filly Romp. Catgut's final race came on 3 November at the Houghton meeting when she was entered