b.-T 



^n T 



Appendix.] 



ASTRONOMY 



11 



u 



ii 



APPENDIX 



BY THE ET>ITOR. 





\ 



(A, ) 



A List of the niost conspicuous Variable or Periodic Stars of "^ liieli ob- 

 servatioiis would be desirable, with their periods of V^iriation (so f^ir 

 as kuown) and changes of magnitude. 



! 



/5 Persei . 

 I A. Tauri . 



B Cephei * 



p Lyrce . 

 j ri Aquilse. • 

 I Z Gemir.o" im 

 ! sc Herculis . 



' < Auriffse 

 I A Leti 



i a Hydrsi 



\ ic Sagittarii . 



1 9j Argus . 



I fa Ursae Minoris 



I a&^jUrsaeMajorisl 



t 



I 



I 



Period 



I>. 



H. 



20 



48 



4 



i 



5 



8 37 



6 



9 .. 



*>* 



i 



4 15 



10 



o t-^<i) 



60 



6 .. 



1 9 months . 



334 



• s • • 



494 



. • 



Many 



vears . 



Irregular • | 



Unkn 



own . 



Do. . 



• • 1 



Change -'f 

 Magnitude. 



2 

 3-4 



3^4 



3 



3-4 



4-3 



3 



2 

 4 

 3 



1 





1'2 



to 



to 

 to 



to 



to 

 to 



to 



to 

 to 

 to 

 to 

 to 

 to 



10 



6 



A 



■* 



2'3 

 2 



4 

 4 



4-5 

 4'5 

 4 



( B. ) 



Lists of Fixed Stars in either hemisphere, approximately arranged in 

 order of brightness, down to the fourth magnitude, for the purpose 

 of mutual comparison under fa-vourable circumstar.ces of altitude, and 

 e ; :dally in equaf-^'TJ and tropical voyages, or land statLiis, with a 

 view to bringing the nomenclature and scale of magnitudes in the two 

 hemispheres to agreement, and to the improvement of this branch of 

 astronomical knowledge. The comparisons to be made by the i . ' d 

 eve amonor the stars of both lists not differing much (at the tiioe *jf 

 observation) in altitude, and in the absence of the moon and twilight, 

 and the results arranged in sequences, beginning with the brightest, 



^1 



