" " Sulphuric Acid 9 " " Nitrate of Potassa 10 " " Potassa and Nitrate of Lime 12 " " Potassa and Nitric Acid 12 " " Chlorate of Potassa 13 " " Chlorine 13 " " _Aqua Regia_ 14 Dialysis 15 DETECTION OF POISONS, THE PRESENCE OF WHICH IS SUSPECTED. Detection of Arsenic 17 _Method used prior to Marsh's test_ 17 _Marsh's test_ 21 _Raspail's test_ 29 _Reinsch's test_ 30 Detection of Antimony 30 _Flandin and Danger's apparatus_ 32 _Naquet's apparatus_ 34 Detection of Mercury 36 _Smithson's pile_ 36 _Flandin and Danger's apparatus_ 37 Detection of Phosphorus 39 _Orfila's method_ 39 _Mistcherlich's method_ 40 _Dusart's method, as modified by Blondlot_ 40 _Fresenius and Neubauer's method_ 42 _Detection of Phosphorus by means of bisulphide of carbon_ 43 _Detection of Phosphorous Acid_ 45 _Estimation of Phosphorus_ 45 Detection of Acids 46 _Hydrochloric Acid_ 46 _Nitric_ " 47 _Sulphuric Acid_ 47 _Phosphoric_ " 48 _Oxalic_ " 49 _Acetic_ " 49 _Hydrocyanic_ " 50 Detection of alkalies and alkaline earths 52 Detection of chlorine, bromine and iodine 54 _Chlorine and Bleaching Chlorides_ 54 _Bromine_ 55