After the preliminary observations on General Poisoning, I proceed next to treat of Poisons Individually. The subsequent remarks will be confined in a great measure to the most common poisons, which will be examined minutely. The rest being mere objects of curiosity, and hardly ever taken by man either intentionally or by accident, it will be sufficient to point out their leading properties. It may be well to point out in the first instance the poisons in most general use. These will appear from the following Tables. The first is compiled from a Parliamentary Return of the cases of fatal poisoning brought before the coroners of England in two years ending with 1838. 1. _Arsenical_ White arsenic 185 Yellow arsenic 1 —— 186 2. _Acids_ Sulphuric acid 32 Nitric acid 3 Oxalic acid 19 —— 54 3. _Mercurials_ Corrosive sublimate 12 White mercury 1 Turbith-mineral 1 Mercury (?) 1 —— 15 4. _Other mineral irritants_ Tartar-emetic 2 Sulphate of iron 1 Chloride of tin 1 Subacetate of lead 1 Bichrom. of potash 1 Percussion powder 1 Carbonate of potash 1 Black-ash 1 —— 9 5. _Veget. irritants_ Colchicum 3 Hellebore 1 Savin 1 Cayenne 1 Castor seeds 1 Morison pills 1 —— 8 6. _Anim. irrits._ Cantharides 2 7. _Opium_ Opium or Laudan. 180 Opium & nitric acid 1 Poppy-syrup 4 Godfrey’s Cordial 6 Morphia 1 Acetate of morphia 1 —— 193 8. _Hydrocyanic acid_ Med. Hydroc. acid 27