54 PROCEEDINGS OP THE ACADEMY OP 



42. Gamrna Lyra?, of 3d magnitude. Both these stars, Beta Lyra? and Gam- 



Lyra;, seem to be changing their colors. Herschel, Sr., and South 

 gave Beta as white. Next, Smyth, in 1834, gave the general im- 

 pression as whi:e, the four companions being in the following 

 order: very while and splendid, pale grey, faint yellow, light blue. 

 He gave Gamma Lyra? then as being bright yellow. Schmidt re- 

 garded the colors of both Beta and Gamma the same yellowish 

 white from 1844 to 1855. Webb, in 1849 50, regarded Gamma 

 as much less yellow than Beta, if not white. In 1862, the latter 

 observer found Gamma the paler in tint, though the difference was 

 not considerable. According to these statements Beta changed from 

 white to yellow and Gamma from yellow to white. Both were of 

 the same color, yellowish white, according to Schmidt, about 

 1844. The only discrepancy is Schmidt, for the latter portion of 

 his time, the former portion being remarkably confirmative. 



43. Eta Lyrae, 5 : 9. Caerulea. Struve, during five years, about 1830. 



Sky blue and violet. Webb, 1834. 

 The 5, yellow. " 184950. 



" pale yellow. " 18G2. 



44. Gamma Aodrornedse, 3k : 5. Deep yellow and sea green. Webb, 1862. 



The 5 is double, and the colors of the two latter have been 



given as follows : 

 Subviridis et violacea. Secchi, 1856. 

 Yellow and blue. Sir W. K. Murray, 1857. 



" " Dawe3, Jacob. 



45. Gamma Arietis, 4J : 5. Both " egregie alba?." Struve, 1830. 



White. Dembowski, 1852, 1854, 1856. 



The same, either white or light yellow. Piazzi Smyth, 1856. 



Full white and faint blue. Webb, 1862. 



46. Iota Trianguli, 5J : T. White or yellow and blue. Secchi. 



Topaz yellow and green. Webb, 1862. 



47. Gamma Ceti, 3 : 7. The 7 tawny. Webb, 1850. 



Pale yellow and lucid blue. Webb, 1863. 



48. Gamma Leonis, 2 : 4. White and reddish white. Herschel, Sr. 



Bright orange and greenish yellow. Webb. 



I . 72 P. II. Cassiopea?, 4J : 7 : 9. White, blue, ruddy violet. Dembow- 

 ski. 18546. 

 Pale yellow, lilac, blue. Webb, 1863. 



50. Kappa Cepbei, 4] : 8^. The 4 J greenish. Struve. 



Pale yellow and blue. Webb, 1863. 



51. Zeta Cephei, 5 : 7. Yellowish and blue. Struve, 1831. 



Both bluish. Smyth, 1839. 



White and tawny or ruddy. Webb, 1850. 

 Flushed white and pale lilac. " 1851. 



. 40 Draconis, 5$ : 6. Both white. Struve, 1832. 

 Both white. Webb, 1839. 

 Both white or yellowish. Webb, 1850. 

 Both yellow, the 5J deeper. " 1856 and 1863. 



53. 12 Canon) Venaticorum, 2 : 6J. White and red. Herschel, Sr. 



" With all attention I could perceive no contrast of colors in the 

 two stars." Herschel, Jr., 1830. 



[March 



