What symbols did John Dalton use for atoms?

John Dalton (1766-1844) was a science teacher who also kept detailed records of the weather. He suggested that every chemical element consisted of tiny particles, atoms, which were identical to each other but different from the atoms of other chemical elements. He also gave names and symbols to about 30 chemical elements.

However, he thought that atoms were solid spheres, like metal balls, which could be never destroyed. Also, some substances which Dalton believed were elements are now known to be combinations of elements, or compounds.