96 



REPORT — 1901. 



Silicon (Spark Spectrum). 



Eder and Valouta, ' Sitzber. kais. Akad. Wissensch. Wien,' cvii. (2), 1898. 

 Exner and Haschek, ihid., cviii. (2), 1899. 

 Lockyer, ' Proc. Eoyal Soc.,' Ixv. p. 449. 1900. 



t Observed also by Count de Gramont, who gives also lines at 6969'7, 6342'2, 

 5978-9, 5960-3, 5948-0 ?, 50600, 5045-5. 



* Observed also by Rowland, whose values are 4103-101, 3905-666, 2987-766, 

 2881-695, 2631-392, 2528-599, 2524-206, 2519-297, 2516-210, 2514-417, 2506-994, 

 2443-460, 2438-864, 2435-247, 2216-760, 2211-759, 2210-939, 2208060. Rowland gives 

 also lines at 5948-761, 5771-360, 5708-620, 5645-835, and 2218-146. 



t 3807 Lunt, 'Astroph. J.' si. p. 269 (1900). 



