Prior to Mr. Sugg--namely, in the early part of 1879--Mr. Bray had successfully obviated this injurious action upon the flame of the ascending current of air, by affixing to the burner two arms of brass, so placed as to be immediately under the projecting wings of the flame. [Illustration: 1868 BURNER. 1874 BURNER. TABLE-TOP BURNER. FIG. 10.--SUGG'S HOLLOW-TOP BURNERS.] BRAY'S BURNERS. The burners of Messrs. George Bray and Co. have deservedly acquired a world-wide reputation, and are in extensive use wherever gas lighting is known. Their distinguishing characteristic, and that which has won for them the high repute in which they are held, is the union of cheapness with remarkable efficiency. In all the various descriptions and classes of burners which are produced by this firm, the characteristic referred to is preserved; although it is needless to add that the different varieties are not equally efficient. Of the three forms of flat-flame burners we have been considering--batswing, union-jet, and hollow-top--the one which, more than any other, has been the speciality of the firm is the union-jet; and it is with the development of this class of burner that the name of Bray is most intimately and honourably associated. [Illustration: UNION-JET. HOLLOW-TOP OR SLIT-UNION.[9] BATSWING. FIG. 11.--BRAY'S "REGULATOR" BURNERS.] [9] The name "slit-union," by which Mr. Bray prefers to designate this burner, he states to be derived from the resemblance of its flame to that of the union-jet burner; while it is produced by means of a slit. [Sidenote: Bray's "regulator" burner.] [Sidenote: Bray's "special" burner.]