[ [8] See Journal of Gas Lighting, Vol. XXXII., p. 423, and Vol. XXXVI., p. 376.
[ [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.
[10] Although the true batswing is still in common use, I look upon the hollow-top as being its "modern representative;" seeing that, in a great many instances, it has superseded the former burner—of which, indeed, it is only an improved form.
[11] Accum's "Treatise on Gas-Lights."
[12] Clegg's "Treatise on Coal Gas," 1st Ed., p. 197.
[13] See Journal of Gas Lighting, Vol. XXXIII., p. 162.
[14] See Vol. XL., pp. 786, 950; and Vol. XLII, p. 836.
[15] In justice to Mr. Clark it should be mentioned that, since the above appeared in the Journal of Gas Lighting, the attention of the writer has been called to the fact (which had been overlooked by him) that Clark's patent was taken out some months before that of either Grimston or Thorp.
[16] See Chap. II., p. 21.