16 SOME NEW SALTS OF CADMIUM. 



CaJmio -iodide of Barium. 



Iodide of Barium mixed in the same proportions with iodide of 

 cadmium gave a mass of crystals which deliquesced so rapidly that it 

 was impossible to examine their form. 



2,281 grins dried in bibulous paper and weighed as quickly as pos- 

 sible, gave 



Iodide of Silver 2.5105 = 59.08 Iodine. 



Sulphate of Baryta... 0-6195 == 16.73 Barium. 



Sulphide of Cadmium 0.3790 = 12.92 Cadmium. 



Water as loss 10.37 



These numbers lead to the formula Ba I+Cd 1 + 5 HO. 



Cal 

 Ba -1- S51.S5-10.17-16.73 

 Cd -1- 696.77-13.18-12.92 

 I -2-3171.14-59.99-59.98 

 HO -5- 562.50-10.66-10.37 as loss. 



5285.26 100.00 100.00 

 Cadmio-iodide of Strontium was obtained in the same manner. It 

 crystalizes in large clear crystals efflorescent in very dry, but deli- 

 quescent in a moderately damp atmosphere. When heated it easily 

 loses iodine, and absorbs carbonic acid. Owing to this circumstance 

 the quantity of water in the following is rather too large, and of the 

 iodine too small. 

 1.8105 grms gave 



Loss on heating 0.3225 = 17.81 water. 



Sulphate of Strontia.... 0.4225 = 11.11 Strontium. 

 Sulphide of Cadmium ..0.2720 = 11.68 Cadmium. 



Iodide of Silver 1.9370 = 57.80 Iodine. 



These numbers lead to the formula Sr I + Cd 1 + 8 HO. 



Cal 

 Sr -1- 545.60-10.27-11.11 

 Cd -1- 696.77-13.11-11.68 

 I -2-3171.14-59.68-57.80 

 HO -8- 900.00-16.94-17.81 



5313.51 100.00 98.40 

 Owing to the small quantity of salt in my possession the crystals 

 could not be obtained quite free from all admixture, and the analysis 

 does not agree very perfectly with the calculation, but sufficiently so 

 to establish the formula. 



