Note 119 — FOREWORD (continued 5)

Those who are interested in the relative merits of the Rideal-Walker, the Lancet and the Hygienic Laboratory methods for the valuation of disinfectants, should read the following: Method of Standardizing Disinfectants with and without Organic Matter, J. A. M. A., Aug. 24, 1912, p. 667; Standard­ization of disinfectants, Report of the Council on Pharmacy and Chemistry, J. A. M. A., April 26, 1913, p. 1316; Standardizing Disinfectants, J. A. M. A., Sept. 30, 1916, p. 883.