Prof. A. Kundt on the Indices 

 Table (continued). 



Copper. 



No. 



8. 



a. 



n. 



Eemarks. 



Eed. 



White. 



Blue. 



Eed. 



White. 



Blue. 



1 



2 

 3 



8-55 

 12-31 

 11-75 



- 4-70 



- 6-74 



- 305 



- 4-23 



- 410 



+ 0-50 

 - 2-01 



0-45 

 0-45 



064 

 0-66 

 0-65 



1-06 

 0-84 



Electrolytically deposited 

 from the Eoseleur bath 

 of copper potassium cya- 

 nide. A copper prism 

 from copper sulphate also 

 gave strong normal dis- 

 persion, but the angle 

 could not be accurately 

 determined. 











Mean . . . 



0-45 



0-65 



0-95 



Platinum. 



1 

 2 

 3 



1257 

 14-21 

 14-52 



+ 9-50 

 + 9-23 

 +12-65 



+ 8-27 

 + 8-50 

 + 9-61 



+ 4-06 

 + 6-08 

 + 8-31 



1-76 

 1-65 

 1-87 



1-76 



1-66 

 1-60 

 1-66 



1-32 

 1-43 

 1-57 



The prisms were obtained 

 by disintegration of pla- 

 tinum foil intensely 

 heated in air by the elec- 

 tric current, and subse- 

 quent reduction by heat- 

 ing. 











Mean... 



1-64 



1-44 



Iron. 



1 



2 

 3 

 4 

 5 

 6 



13-97 

 25-44 

 6-01 

 993 

 13-70 

 1992 



+10-21 

 +22-59 



+ 9-66 



+ 17-83 

 + 4-94 

 + 6-29 

 + 9-22 

 +17-61 



+ 6-12 

 +15-13 



1-73 

 1-89 



1-69 

 1-70 

 1-82 

 1-63 

 1-67 

 1-88 



1-44 

 1-59 



Electrolytically deposited 

 according to Varren- 

 trapp's method. 











Mean . . . 



1-81 



1-73 



1-52 





Nickel. 



l 



2 

 3 



912 

 9-56 

 9-50 



+11-90 

 + 9-93 



+ 9-16 

 + 8-09 

 +11-18 



+ 8-26 

 + 7-41 



2-30 

 2-04 



2-00 

 1-85 

 2-18 



1-91 



1-78 



Electrolytically deposited 

 from nickel ammonium 

 sulphate. 











Mean... 



217 



2-01 



1-85 





Bismuth. 



1 

 2 

 3 



12-87 

 14-20 

 23-79 



+20-19 

 + 21-56 

 +41-28 



+ 15-31 

 + 19-73 

 +28-71 



+ 14-09 

 + 17-96 



+24-48 



2-57 

 2-52 

 2-74 



2-19 

 2-39 

 2-21 



2-10 

 2-26 

 203 



Electrolytically deposited 

 from a tartaric acid bath 

 of bismuth. 











Mean... 



2-61 



2-26 



2-13 





