Abstract: Gas burner for a liquid petroleum gas artificial log or coal fire comprises a first tube having holes at spaced intervals along its length and a second tube housed within the tube, and means by which a combustible mixture of gas and air can be introduced into the second tube at a first end thereof. The second tube is open at its end remote from its first end and suitably spaced from an end wall closing the tube so that the combustible mixture travels along the second tube leaving its remote end and back along the first tube which it leaves through the holes. The tube extends lengthwise in a tray in which heat-resistant material e.g. mineral fibres dissipate gas so that flames rise between logs supported on a frame in the tray.