40S 



PHILOSOPHICAL TEANSACTIONS. 



[anno 1783. 



therefore be ascribed to a real motion in the stars themselves, or to some still 

 more hidden cause of a still remoter parallax. 



Names of Mot. in 

 stars. right as. 



/8 Ceti + 32 



"Arietis. . . . + 10 



^Ceti + 15 



*Ceti + \6 



« Persei . . . . + 16 



i Pleiadum. . 



y Eridani . . + 14 



« Tauri .... 



« Aurigae . . + 11 



/3 Ononis . . insens. . 



/3 Tauri ... — 11 . 



Polaris 

 y Ceti . . 

 £ Persei. . 

 * Leporis 



- 14 



— 13 



TABLE I. 

 Motion Names of Mot. in Motion 



in decl. stars. right as. in decl. 



« Orionis insens. — 1 1 



/* Geminorum . . — 16 



f Navis — 13 - 11 



fi Cancri — 14 



i Ursae majoris. . — 54 



. - 16 C Hydras — 23 



y Leporis — 10 



. — 11 f Ursae majoris. . — 33 + 10 



.— 11 «■ Serpentarii . . insens. 



. insens. y Draconis . . . . + 12 



. — 13 « Lyrae insens. + 14 



TABLE II. 



. + 13 p Geminorum . . + 15 



' Canis majoris. . + 10 



C Hydrae +24 



+ 11 * Hydrae +13 



Names of Mot. in Motion 

 stars. right as. in decl. 

 - 20 



y Aquilae . , 



y Capricorni . . + 19. . 



« Pegasi 



£ Capricorni . . + 24. 



<* Aquarii . . . . + 13. , 



£ Pegasi 



Fomahand . . + 21.. 



fi Pegasi + 12. ! 



« Andromedae 



fi Cassiopeae . . + 34. . 



- 28 



- 17 



- 13 



— 21 



/3 Herculis 

 y Cygni. . . 

 ' Pegasi. . . 



£ Pegasi. . . 



+ 14 



+ 13 



- 14 



— 20 



From the first table we gather, that the principal stars, Lucida Lyras, Capella, 

 a Orionis, Rigel, Fomahand, a, Serpentarii, a. Aquarii, « Arietis, a. Persei, a. 

 Andromedae, (3 Tauri, (3 Ceti, and 20 more of the most distinguished of the 2d 

 and 3d rank of stars, agree with our proposed solar motion ; when, on the con- 

 trary, the 2d table contains but a few stars, and not a single one of the first 

 magnitude among them to oppose it. It is also remarkable, that many stars of 

 the first table agree both in right ascension and declination with the supposition 

 of a solar motion ; whereas there is not one among those of the 2d table which 

 opposes it in both directions. This seems to indicate that the solar motion, in 

 some of them at least, has counteracted, and thereby destroyed the effect of 

 their own proper motion in one direction, so as to render it insensible; other- 

 wise it would appear improbable, that 8 stars out of 12, contained in the latter 

 table, should only have a motion at rectangles, or in opposition to any one given 

 direction. The same may also be said of ig stars among those of the former 

 table, that only agree with the solar motion one way, and are as to sense at rest 

 in the other direction ; but these singularities will not be near so remarkable 

 when we have the motion of the sun to compound with their own proper 

 motions. 



It will be found, that I have placed the want of sensible motion of x Lyras 

 and a. Orionis in right ascension, and of Rigel both in right ascension and de- 

 clination, to the account of those stars that arc in favour. These stars are so 

 bright, that we may reasonable suppose them to be among those that are nearest 



