26 



GENERAL INDEX. 



Subject. 



Niobium, Atomic volume and affinity - 



Author. 



Date. 



" Microscopic analysis 



" Quantitative determination 



" Color reaction 



" Flame reaction 



Nickel fluoniobate 



Nitrate 



Nitride 



Neptunium 



Occurrence in granite. 



Oxyfluorides 



Oxides 



" Action of hydrogen peroxide upon 

 Pelopic acid 



Pelopium — 



Peroxide of hydrogen, Action on oxides 

 Properties of oxide 



" " and metal ■. 



Polycrase, Acids in 



Pyrochlore, Acids in 



Quantitative determination 



Keaction, Color 



" Flame 



Keraarks on Pelopic Acid 



Researches 



Salts 



wSeparation niobic and tantalic acids 



" Niobium frtmi Ilmenium . 



" Metallic acids 



" from Gallium 



Sodium niobate 



Specific weight, ctlcct of temperature upon. 



Sulphides 



DoxATH and May- 



ERIIOFEti. 



Haushofek 



Osborne 



Levy 



BUNSEX 



Santessox 



EcsE, H 



JOLY 



Hermann 



Stelznek 



JOLY 



WOhler 



Hermann 



Rose, H 



Delafontaink .. 



Hermann 



Weller 



scheerer 



Hermann 



Rose, H. 



Peretz 



Hermann 



PvOSE, H. 



Weller 



WOhler 



Hermann 



Scheerer 



Hermann 



Osborne 



Levy 



BUNSEN 



Hermann 



Rose, H. 



Hermann 

 Oesten 



Hermann . 



Smith 



Hermann . 



Smith 



Rose, H 



Marignac. 



JOLY' 



Hermann . 



Tantalum, Identity with Niobium 



Rammellsberg . 

 b0isbaudran__. 



Santesson 



Rose, H 



Wollaston. 



