TABLE I. 



Elementary Substances, with their Atomic Weights in MuMk/ d + *■ o o o 



* m Mu Uipte Proportions, 1878— 1894.— ipo2— igoj 1906. 



H 



1 



Li 



c 



= 7 



•• 7* 

 •59+ 



Na 



= 23 



c 



• • 23 



■98 



K 



= 39 



c 



' • 39 

 •86 



Cu 



= 62 



I 



• • 63-3 

 >9 



Rb 



= 85 



• 85 



i 



•52 



Ag 



= 108 



• • 108 



] 



o"6 



Cs 



= 131 





• 132 

 [•88 



F = 19 



• • • • 19 



CI = 35 



" ' ' " 355 

 1 "3 



Br = 81 



• • • • 80 

 3'° 



I =127 



• • ■ • 127 

 4'95 



+ H2«— 



He = 2 



x =154 



x =177 



2'2t 



Hg= 200 



• ■ ■ • 200 

 136 



Gl = 8 



.... 9 . 2 



1-64? 1-3+ 



Mg= 24 



• • • • 24 



i"74 



Ca = 40 



• • • • 40 

 1 - 5 8 



Zn = 64 



• • ■ • 65 



7 -2 



Sr = 88 



.... 8y . 5 



2'54 



Cd = 112 



• • ■ • 112 



869 



Ba = 136 



■ ' - • 137 



3'75 



x = 160 



10-13+ 



Ra = 184 



4-8 % 



Pb = 208 



• • ■ • 207 

 11-44 



O = 16 



• ■ • • 16 



32 



32 



2-05 



Se = 80 



• • ■ • 79-4 



4-8 



Te = 128 



• ■ • • 128 



6-3 



H3> 



H4W 



C = 12 



■ • • • 12 

 r '7i§ 



Al = 27 



• • • • 27 



2-56 



Sc = 42 



• ■ • • 44 



3 "4 



Ce = 69 



92 : 141 



6-5 



Ga= 96 



.... ?0 



5'95 



Y = 123 



617 :8 9 '5 

 8-it 



In = 150 



75-6: 1134 



742 



Er = 177 



• • • • i7o( 



94+ 



Tl = 204 



• • • 204 



11-85 

 Th = 231 



.... 23I - 4 

 H-23 



— = 16 



— = 32 



Ti = 48 



• • • • 48 

 4-i| 



Ge = 72 



.... ?2 . 7 



5 '47 



Zr = 92 



• • • ■ 90 

 4-i5 ? 5"4l 



Sn = 116 



• • • • 116 

 7-29 



La = 140 



' ' " " 139 

 67 



x = 164 



9-u| 



D = 188 



' " " " 95 

 8-oJ 



U = 240 



• • 240 



18-4 



H5« 



B = 10 



• • • • 11 



2-63 



P = 30 

 • • ' • 31 



1 82 



V = 50 



.... SI . 2 



5 '5 



As = 75 



- ' ' ' 75 

 5-63 



Nb= 95 



• ' " - 94 



6-67 



Sb =120 



• • • • 1 20 

 672 



= 140 



8-i5l 

 = 165 



8-3°| 



H6« 



= 18 



= 36 



Cr = 54 



• • • • 524 



7-3 



Ta = 185 



• • • -182 

 10-78? 9'8J 



Bi =210 



- • • - 2IO 

 9^3 



Mo= 96 



•• •■ 96 

 8-6 



* = 144 



IO'oJ 



W =186 



• • • • 184 



18-26 



H7« 

 Ne = 7 



N = 14 



Ar = 21 

 Kr = 42 

 Xe= 63 



Si = 35 



28:35 

 249 



Fe= 56 



Mn= 56 



Ni= 56 



Co= 56 



Pd= 105 

 Rh= 105 

 Ru = 105 

 Da= 105 



Au = 196 

 Pt = 196 

 Ir = 196 

 Os = 196 



196 — 19-34 



'97—21-50 

 198 — 22-42 

 198 — 22-48 



•Accepted Atomic Weights. tSpecific Gravities. {Estimated. ^Anthracite. || Electro-deposited. 



V The accented atomic weights are taken from the standard works and tables of Wurtz, Roscoe and Schorlemmer, J. P. Cooke, F. W. Clarke. 

 * f s and Watts' " Diet. Chem., 3"Pp. ( p. 247— Atomicity. 



