ALPHABETICAL INDEX OF AUTHORS. 



17 



Author. 



Date. 



Knop 



kokscharow 



D... 



Leonhard and Vogel- 



Lettson 



Levy 



Do. 



Levy, L 



Mallet 



Marignac -_- 



Do. 



Do. 



Do. 



i 



Do. 



Michaelson ._. 



MiTLLER 



Do. 



XORDENSKIOLD . 



Do. 

 Do. 

 Do. 

 Do. 



Oesten 



Do. 



O.SBORXE 



?ERETZ 



Phipson 



PrcciNi 



PiAMMELLSBERG. 



Do. 

 Do. 



Do. 



Do. 

 Do. 

 Do. 



PtOSCOE — 



EosE, G. 

 Rose, H. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Do. 



FDo. 

 'Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 D.). 

 Do. 



Crystallization niobic anhydride 



Aeschynite 



Specitlc gravity aeschynite 



Identity of columbium and tantalum 



Crystalline form of columbit • 



Aeschynite 



Aesch3-nite 



(!olor reaction 



Si py lite 



Acids and salts 



Columbite 



Estimation ilmeniuni and niobium ^ 



Analysis and specific gravitj^, aeschynite and 



euxenite. 



Hydrates 



Bragite and tyrite __. 



Columbite 



Composition of columbite 



Minerals 



Niobic acid 



Columbite 



Noblite 



Analysis minerals 



Researches ". 



Researches 



Quantitative estimation 



Niobic, pelopic, and ilmenic acids 



Columbite 



Mineral associated with columbite 



Compounds, atomic weight 



Yttrotantalite, pyrochlore, and euxenite 



Hjelmite 



Fergusonite and tyrite 



Composition of natural niobates and separation 



of metallic acids. 



Minerals 



Aeschynite and samarskite 



Analysis samarskite and aeschynite 



Samarskite 



Samarskite 



Researches 



Researches 



Researches 



Minerals 



Acids in columbite 



Effect of temperature on specific weight of 



compounds. ^ 



Niobic, ilmenic, and pelopic acids 



Identity of ilmeniuni and niobium 



Properties of metal and oxides 



Pel opium 



Columbite 



Researches, identification, compounds, etc. 



Niobic and niobous acids, metal, chlorides, etc._ 



Compounds 



Sulphide 



Pluorides and chlorides 



Nitrate 



I 



