There is a stop-cock between the trocar and syringe, and another at right angles to the syringe. A Manual of the Operations of Surgery Joseph Bell. The operation is performed with a combined instrument called the trocar and cannula.
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Hard rock maple, rock maple, hard maple or sugar maple (Acer nigrum) is an excellent wood for guitar necks. It is most commonly used for electric guitar necks, although archtop guitars and resonator guitar necks are almost exclusively made from maple. It is very strong, carves well and has a tight grain.