Dalton's symbols were not easy to memorize but they did have some benefits each symbol represented one atom and the formula of the compound was made up of the symbols of its elements, below are the examples of Dalton's symbols.
Oxygen H
Hydrogen N
Nitrogen C
Carbon S
Sulphur P
Phosphorous Au
Gold Pt
Platinum Ag
Silver Hg
Mercury Cu
Copper Fe
Iron Ni
Nickel Sn
Tin Pb
Lead Zn
Zinc Bi
Bismuth Sb
Silicon Y
Yttrium Be
Beryllium Zr
Zirconium
Few years later Dalton's theory was replaced by chemical symbols and formula of Berzelius which are still used till today's time.
Below are the examples of Berzelius symbols:
Aluminum Al
Argentum Ag
Arsenic As
Aurum Au
Barium Ba
Bismuth Bi
Boron B
Calcium Ca
Carbon C
Cerium Ce
Cobalt Co
Uranium U
Yttrium Y
Zinc Zn