Catgut down to the desired diameter using a centerless grinder. After drying and polishing, workers bleach and disinfect the strings using sulfur dioxide, dye them if necessary, and sort them into sizes. Catgut sutures are normally treated with a chromium salt solution to resist body enzymes, to slow the absorption process, and are called catgut chromic sutures—whereas untreated catgut sutures are called catgut plain sutures. Catgut Catgut is a type of cord that is prepared from the natural fibre found in the walls of animal intestines. Catgut makers usually use sheep or goat intestines, but occasionally use the intestines of cattle,
Music history of the United States during the colonial era on the State of Virginia", which refers to it as a "banjar", and notes that the instrument came from Africa. Other names included "bangoe", "banshaw", "bangelo", "banza", "bangil" and "banjer". The instrument was described in West Africa as early as 1620 by Richard Jobson, but was present for some time before. In North America, the banjo was typically made by hollowing out a gourd or calabash and attaching a long neck. The slaves then stretched a piece of animal hide, usually raccoon, over the bowl and attached four strings. Jefferson claimed that the "banjar" with which he was familiar was