Dr Vivek N Patil
Carbon in its purity is found only in the diamond. We have it comparatively pure, however, in the lampblack, or Carboneum. Carbon will necessarily be somewhat different in its action according to the source from which we obtained it.
Hahnemann used principally three carbons, CARBO ANIMALIS, CARBO VEGETABILIS and GRAPHITES. The first he derived from the animal kingdom, the second from the vegetable, while the last was an artificial product found principally lining the interior of large iron retorts. Carbo Animalis is obtained principally from bones. It contains some phosphate of lime. Carbo Veg. contains some carbonate of potash. It is obtained principally from a variety of the beech-tree.
Graphites is always contaminated with more or less iron. Hence you see that these are not pure carbons. I have also placed on the board, the Sulphate of Aniline which behaves like a carbon and is a carbonaceous compound. Then too, we have Carboneum and Carbonic oxide. Carbonic acid gas does not seem to possess active medicinal properties. It is not very poisonous. Its main deleterious effects are due to deprivation of oxygen. Carbonic oxide is much more poisonous, producing death, not only by suffocation, by displacing the needed oxygen, but by another remarkable peculiarity. It has the property or peculiarity of displacing oxygen from the blood and taking its place there. You know that oxygen is carried along in the blood by the red corpuscles. Carbonic oxide has the power of supplanting the oxygen in these structures. For a time, it seems to act like oxygen, but soon its poisonous properties are manifested with all the inevitable results of asphyxia. Coal gas, which we obtain by slow combustion of coal, and the illuminating gas used in our large cities, are of this character. They produce serious effects when taken in large quantities, especially when the subject is deprived of the ordinary atmosphere.