Note 18 — Chapter VIII · CARBON AND THE HYDROCARBONS
George Kamensky translation
The existence of a molecule S6 is known (up to 600°), and it must be held that this accounts for the formation of hydrogen persulphide, H2S5. Phosphorus appears in the molecule P4 and gives P4H2. When expounding the data on specific heat we shall have occasion to return to the question of the complexity of the carbon molecule.