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(46) F. Accum, "A Treatise on Adulterations of Food and Culinary Poisons", Longmans, Hurst, Rees, Orme, and Brown, London, England, 1820. (47) J. Mitchell, "Treatise on the Falsifications of Food, and the Chemical Means Employed to Detect T h e m " , Hippolyte, Bailliere, London, England, 1848. (48) A. Normandy, " T h e Commercial Handbook of Chemical Analysis", Knight, London, England, 1850. (49) A. H. Hassall, "Food and its Adulterations; Comprising the Reports of the Analytical Sanitary Commission of " T h e Lancet", for the years 1851 to 1854 inclusive, Revised a n d Extended", Longman, Brown, Green, and Longmans, London, England, 1855. (50) C. A. Browne, J. Chem. Educ, 2, 829 (1925). (51) C. A. Browne, ibid., ρ 1008. (52) C . A . B r o w n e , ibid., ρ 1140. (53) F. A. Filby, "A History of Food Adult eration and Analysis", ρ 262, Allen and Unwin, London, England, 1934. (54) J. Mitchell, "Treatise on the Falsifica tions of Food, and the Chemical Means Employed to Detect T h e m " , pp 125-30, Hippolyte, Bailliere, London, England, 1848. (55) A. Normandy, " T h e Commercial Handbook of Chemical Analysis", ρ 455, Knight, London, England, 1850. (56) A. Normandy, ibid., pp 205, 206. (57) J. Mitchell, "Treatise on the Falsifica tions of Food, and the Chemical Means Employed to Detect T h e m " , ρ 156, Hip polyte, Bailliere, London, England, 1848. (58) A. H. Hassall, "Food and its Adultera tions; Comprising the Reports of the An alytical Sanitary Commission of " T h e Lancet", for the years 1851 to 1854 inclu-
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