CHEMISTRY,
By analyzing compound and compounding simple substances, discovers their elementary properties, the forces that are resident in matter, and the laws that govern them. It demonstrates by experiments the affinity of ultimate particles, and of gases of unlike kinds for each other, an affinity which produces homogeneous compounds, often very unlike the elements that unite in forming them. The chemist has much to do with physical objects, but in handling them his appropriate business is to consider the changes produced by chemical attraction in all bodies, whether solid, liquid, or gaseous.