102 



COSMOS. 



Star. 



v Scorpii 



i Ononis 



y Lyncis 



f Draconis .. 



a Arae 



rr Sagittarii .. 

 7r Herculis . . . 

 8 Can. min. ? . 



C Tauri 



4 Draconis .. 

 u Geminorum 



y Bootis 



t Geminorum 



a Muscae 



a Hydril 



r Scorpii 



6 Herculis... 



Magnitude. 



▼nig. 



3-37 

 337 

 3 39 

 3-40 

 3-40 

 3-40 

 3-41 

 3-41 

 3 42 

 3-42 

 3-42 

 3 43 

 3 43 

 3 43 

 3 44 

 3-44 

 3 44 



Phot 



3-78 

 3-78 

 3-80 

 3-81 

 3-81 

 3-81 

 3-82 

 3-82 

 383 

 383 

 383 

 3-84 

 3 84 

 3-84 

 3-85 

 3-85 

 385 



Star. 



d Geminorum . 



p Orionis 



3 Gephei 



# Ursae 



C Hydrae 



y Hydrae 



3 Triang. austr 



i Ursae 



7j Aurigae 



y Lyrae 



tj Geminorum . 



y Cephei 



k Ursae 



e Cassiopeiae . 



■& Aquilae 



a Scorpii 



r Argus 



Magnitude. 



Vulg. 



3-44 

 3-45 

 3-45 

 3 45 

 3-45 

 3-46 

 346 

 3-46 

 3-46 

 3-47 

 3-48 

 3-48 

 349 

 3 49 

 350 

 350 

 3-50 



Phot. 



385 



386 

 3 86 

 3-86 

 386 

 3-87 

 3-87 

 3 87 

 3-87 

 3-88 

 389 

 3-89 

 390 

 390 

 391 

 391 

 391 



" The following short table of the photometric quantities 

 of seventeen stars of the first magnitude (as obtained from 

 the photometric scale of magnitudes) may not be devoid of 

 interest :" 



Sirius 4*165 



7] Argus 



Canopus 2*041 



a Centauri 1*000 



Arcturus 0*718 



Rigel 0*661 



Capella 0*510 



aLyra 0*510 



Procyon 0*510 



a Orionis 0*489 



aEridani 0*444 



Aldebaran. . .0*444 



(3 Centauri 0*401 



aCrucis 0*391 



Antares 0*391 



a Aquihre 0*350 



Spica 0*312 



" The following is the photometric quantity of stars strict- 

 ly belonging to the 1st, 2d 6th magnitudes, in which 



the quantity of the light of a Centauri is regarded as the 

 unit :" 



Magnitude on 

 the vulgar scale. 



1*00 

 2*00 

 3*00 



Quantity 

 of light 



0*500 

 0172 

 0*086 



Magnitude on 

 the vulgar scale. 



4-00 

 5-00 

 6*00 



Quantity 

 of light 

 0*051 



0*034 

 0*024 



