_Aluminum_. _Al_ 27. _Antimony_. _Sb_ 120. _Arsenic_. _As_ 75. _Barium_. _Ba_ 137. _Bismuth_. _Bi_ 208.9 _Boron_. _B_ 11. _Bromine_. _Br_ 79.95 Cadmium. Cd 112. Caesium. Cs 132.9 _Calcium_. _Ca_ 40. _Carbon_. _C_ 12. _Cerium_. _Ce_ 140.2 _Chlorine_. _Cl_ 35.45 _Chromium_. _Cr_ 52.1 Cobalt. Co 59. Columbium.[1] Cb 94. _Copper_. _Cu_ 63.4 Didymium.[2] Di 142.3 Erbium. Er 166.3 Fluorine. F 19. Gallium. Ga 69. Germanium. Ge 72.3 Glucinum.[3] Gl 9. _Gold_. _Au_ 197.3 _Hydrogen_. _H_ 1.007 Indium. In 113.7 _Iodine_. _I_ 126.85 Iridium. Ir 193.1 _Iron_. _Fe_ 56. Lanthanum. La 138.2 _Lead_. _Pb_ 206.95 _Lithium_. _Li_ 7.02 _Magnesium_. _Mg_ 24.3 _Manganese_. _Mn_ 55. _Mercury_. _Hg_ 200. _Molybdenum_. _Mo_ 96. Nickel. Ni 58.7 _Nitrogen_. _N_ 14.03 Osmium. Os 191.7 _Oxygen_.[4] _O_ 16. Palladium. Pd 106.6 _Phosphorus_. _P_ 31. Platinum. Pt 195. _Potassium_. _K_ 39.11 Rhodium. Rh 103.5 Rubidium. Rb 85.5 Ruthenium. Ru 101.6 Samarium. Sm 150. Scandium. Sc 44. Selenium. Se 79. _Silicon_. _Si_ 28.4 _Silver_. _Ag_ 107.92 _Sodium_. _Na_ 23.05 Strontium. Sr 87.6 _Sulphur_. _S_ 32.06 Tantalum. Ta 182.6 Tellurium. Te 125. Terbium. Tb 159.5 Thallium. Tl 204.18 Thorium. Th 232.6 Tin. Sn 119. Titanium. Ti 48. Tungsten. W 184. Uranium. U 239.6 Vanadium. V 51.4 Yterbium. Yb 173. Yttrium. Yt 89.1 _Zinc_. _Zn_ 65.3 Zirconium. Zr 90.6 --_Am. Jour. Pharm._ [Footnote 1: Has priority over niobium.] [Footnote 2: Now split into neo-and praseo-didymium.] [Footnote 3: Has priority over beryllium.] [Footnote 4: Standard, or basis of the system.] * * * * * THE TANNING MATERIALS OF EUROPE.