NOTE ON A XEW ELE3[EXT IX THOKIANITE. 11 



means of separation. The higher oxide behaves as an acidic 

 oxide, similar to molybdenum trioxide, and is reducible into the 

 basic oxide by means of zinc and hydrochloric acid. 



The name Nipponium, with the symbol Np, was once sug- 

 gested by Sir Willta:\i Kamsay, and this name will be pro- 

 visionally employed to indicate the new element. 



I can not conclude without expressing my heartiest thanks 

 to Sir William Kamsay for his kind assistance and advice and 

 for his generosity in supplying me with the valuable material 

 for this research, while I was working in his laboratory. 



