Septkmber 1, 1900.] 



KNOWLEDGE, 



203 



Notes on the above List. 



2. A very brilliant star which does rise above the 

 horizon of London. Spectrum " early solar type " 

 according to Huggins. 



3. Sir William Herschel found Arcturus considerably 

 brighter than Vega. 



11. This star is variable to the extent of about half 

 a magnitude. 



13. This is generally considered as a standard star 

 of the first magnitude. But it has been suspected of 

 variation. 



14. This is the brightest star in tlic Southern Cross. 



