Proceedings of the American Academy of Arts and Sciences 

 Vol. XLIII. No. 11. — November, 1907. 



DIFFERENCE IN WA VE-LENGTHS OF TITANIUM 

 XK 3900 AND 3913 IN ARC AND SPARK. 



Bt Norton A. Kext and Alfred H. Avfry. 



INTESTIOATIOSS on LISHT AND HbaX made and published, WHOIXT OB IN FAJBT, WITH ArFKOF&lAHON 



VBOM THB KuUi'OBO FUNS. 



