CADMIUM. 239 



C 12. CARBON-DIAMOND. DUMAS, 1840. 



All necessary data given; see p. 39 and pp. 101-105. 

 Ca 40. CALCIUM. 



All necessary data given; see pp. 106-108. 



The work is not as concordant as required for so impor- 

 tant an element. 



Critical research on the methods used have been carried 

 on for some years and will be completed by actual final 

 determinations as soon as time shall permit. 



Cd 112. CADMIUM. v. HAUER, 1857. 



Cd S : Cd O4 8=144 : 208 = 0.69 231. Chg. 15 high. 



1 Karl v. Hauer, 1857, 9 Det., 257 209548. Mean o high. 



2 Partridge, 1890, ioDet.,2O5 185520. " 32 low. 

 Cd : Cd O = 112 : 128 = 0.87 500. Chg. 10 high. 



3 Morse and Jones, 1892 : 



10 Det., 508 504; 4. Mean 7 high. 



4 Lorimer and Smith : 



9 Det., 518 491; 27. " 4 high. 



5 Bucher, 1894, 2 Det., 511 504; 7. " 8 high. 



6 Bucher, 1894, 3 Det., 491 484; 7. " 13 low. 



7 Morse and Arbuckle, 1900, Absorption of Oxygen? 



3 Wet Way. 4 Electrolysis. 5 Porcelain Crucibles, both. 



6 Pt Cr. in Porcelain Crucible. 



Cd O : Cd O* C2 128 : 200 = 064 O- Ch g- J 8 high. 



8 Lenssen, 1860, 3 Det., 053 982; 71*. Mean 10 high. 



9 Partridge, 1890, 10 Det., 971 957; 14. " 36 low. 

 10 Morse and Jones, 1892 : 



5 Det., 008 996; 12. " 3 high. 

 14 Bucher, 1895, 8 Det., 014 951; 63. " 22 low. 



M. and J. finding subst. slightly hygroscopic, took neces- 

 sary precautions; hence, probably "9" higher. 

 Cd S : Cd O4 C2 =. 144 : 200=20.72 ooo. Chg. 14 high. 



12 Partridge, 1890, 10 Det., 979 968; n. Mean 27 low. 



13 Bucher, 1895, 10 Det., 065 037; 28. " 51 high. 

 No. i, Standard; No. 2, some error; Nos. 3, 6, reason- 



