Inorganic. The salts of milk are the saline substances, which entering into the composition of various parts of the human body, are necessary to its integrity and health. The importance of the presence of these substances is frequently overlooked in food, and many diseases of the human frame arise from their absence. They are conveyed into the system in both animal and vegetable food ; but in common salt we have an instance of a substance belonging to this class, taken directly from the mineral kingdom, as food, without the intervention of an organic body.