_Iodine_ 56 Detection of Metals 56 Detection of alkaloids and some ill-defined organic substances 65 _Stas's method_ 65 " " _as modified by Otto_ 69 " " " " _Uslar and Erdman_ 70 _Rodgers and Girdwood's method_ 71 _Prollius's method_ 72 _Graham and Hofman's method_ 73 _Application of Dialysis in the detection of Alkaloids_ 74 _Identification of the Alkaloid_ 74 _Identification of Digitaline, Picrotoxine and Colchicine_ 80 METHOD TO BE EMPLOYED WHEN NO CLEW TO THE NATURE OF THE POISON PRESENT CAN BE OBTAINED 85 Indicative tests 86 Determinative tests 94 MISCELLANEOUS EXAMINATIONS 96 Determination of the nature and color of the hair and beard 96 _Determination of the color of the hair and beard_ 96 _Determination of the nature of the hair_ 99 Examination of Fire-arms 100 _The gun is provided with a flint-lock and was charged with ordinary powder_ 100 _The gun is not provided with a flint-lock_ 103 Detection of human remains in the ashes of a fire-place 104 Examination of writings 105 Examination of writings, in cases where a sympathetic ink has been used 110 Falsification of coins and alloys 112 Examination of alimentary and pharmaceutical substances 114 _Flour and Bread_ 114 _Fixed Oils_ 128 _a Olive Oil intended for table use_ 128 _b Olive Oil intended for manufacturing purposes_ 130 _c Hempseed Oil_ 130 _Tea_ 130 _Milk_ 137 _Wine_ 142 _Vinegar_ 147 _Sulphate of Quinine_ 148