32. Beizen und neue Beizmittel, W. Eitner, Der Gerber. Bd. XXIV. No. 563–567, 1898.
33. The Rationale of Drenching, by J. T. Wood. Leather Trades Review, Nov. 15, 1898.
34. Cantor Lectures on Leather Manufacture, by Prof. H. R. Procter, F.I.C., Society of Arts. Lecture II., April 24, 1899.
35. Further notes on the Action of the Dung Bate, by Joseph T. Wood. Jour. Soc. Chem. Ind. XVIII. 1899. p. 990.
36. Das Beizen der Blössen in Handbuch der Chromgerbung. Jos. Jettmar. Schulze and Co., Leipzig, 1900.
37. J. Borgmann. Die Feinleder Fabrikation, Berlin, 1901. Das Beizverfahren, p. 65.
38. Das Beizen der Blössen in Praxis und Theorie der Leder Erzeugung, von Josef Jettmar, Julius Springer, 1901.
39. Micro-organisms and Antiseptics in Tanning. F. Jean, Rev. Chim. Ind., 1901.
40. The Principles of Leather Manufacture, by Professor H. R. Procter. E. and F. N. Spon, London, 1903. Chap. XIII.