Abstract: A method and system of regulating the air to fuel ratio supplied to a burner to maximize the combustion efficiency. Optical means are provided in close proximity to the burner for directing a beam of radiation from hot gases produced by the burner to a plurality of detectors. Detectors are provided for sensing the concentration of, inter alia, CO, CO.sub.2, and H.sub.2 O. The differences between the ratios of CO to CO.sub.2 and H.sub.2 O to CO are compared with a known control curve based on those ratios for air to fuel ratios ranging from 0.85 to 1.30. The fuel flow is adjusted until the difference between the ratios of CO to CO.sub.2 and H.sub.2 O to CO fall on a desired set point on the control curve.

Abstract: A device for storing and applying percussion caps to the nipple of a muzzle-loading firearm includes an elongated sleeve with a loading hole through one side thereof adjacent a first end. A follower member slides within the sleeve and is urged toward the hole by a compression coil spring. A chain extends from the follower through the spring and out of the second end. When the chain is pulled and the spring compressed, percussion caps can be inserted into the device through the hole, forming a row of caps within the sleeve. The caps can then be loaded onto the weapon nipple by pushing the nipple into the hole and extracting a cap, whereupon the next cap becomes available at the hole under the force of the compression coil spring.