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Regulus.

1812, June 12, 13, 15, 19, 20,

}23,331 Mean of 10 23,331 22, 23, July 6, 7,8 July 9, 14, 15, 18, 21, 23, 28,

}23,205 Mean of 20 23,268

Oct. 1, 2, 3

Oct. 4, 6, 12, 14, 15, 19, 20,

}22,543

Mean of 30 23,026

23, 27, 28

Nov. 5. 1813, Mar. 7, 10, 12,

}22,236 Mean of 40 22,829 13, 17, 18, 22, 23, 26 Mar. 29, 31, Apr. 1, 2, 3, 4, 7)}22,148 Mean of 50 22,692

9 Apr. 12, 13, 14, 20, 26, May}22,665 Mean of 60 22,688

24, 28, 31, June 2, 7 June 8, 11. July 6, 7, 9 22,576 Mean of 6522,679

Not to be relied on with the same confidence as some others, as one of the above series differs a second from the mean; the result may be erroneous a quarter of a second, but, I think, not inuch more.

a Ophiuchi.

20, 21,

8,9

1812, June 28, 29, July 11, 14, 39,126 Mean of 10 39,126

21, 22, 26, 28, 30, Aug. 3 Aug. 19, 20, Sept. 15, 16, 19:1}39-949 Mean of 20 39,537

Oct. 3, Oct. 28, 31, Noy; 715, 19, 21,340,858 Mean of 30 39,811

, Dec. 29. 1818, Jan. 7, 9, 15,

1

June 24, 25, 26, 27, July 5,6 } 39,215 Mean of

40 39,662

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July 9, 10, 11, 12, 13, 16, 17, 18, 19, 22

}38,849 Mean of 50 39,500 July 23, 24, 25, 26, 27, 28, 29, Aug. 2, 4, 5

}38,528 Mean of 60 39.339 Aug. 7, 9, 10, 12, 13, 15, 17,

1}98,115 Mean of 70 39,163 19, 20, 24 19:29

Some discordances in the above observations, which I cannot explain, render the result doubtful, and I reserve this star for future examination.

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a Aquila,

1812, July 26, 30, Aug. 1, 3, 6, }58,133 Mean of 10 58,133

9, 12, 14, 18, 19 Sept. 15, 16, 18, 19, 20, 21, }59,381 Mean of 20 58,757

Oct, 2, 3, 4, 7
Oct. 8, 10, 13, 15, 16, 19, 21,

} 58,963 Mean of 30 58,826 23, 24, 27 Oct. 28, 29, Nov. 2, 3, 6, 7,15,17

} 59,705

Mean of 40 59,045 19, 21, 22 Nov. 23, 24, Dec. 8, 9, 10.

1813, Jan. 21, Feb. 28, Mar. 59,626 Mean of 50 59,162 5, 6, 7

IS
Mar. 12, 20, 26, 27, Apr. 1, 3. }58,014 Mean of 60 58,970

July 11, 12, 16, 17
July 19, 21, 22, 25, 26, 27, 28,

}58,280 Mean of 70 58,872 29, 30, Aug. 1 Aug. 2, 3, 4, 7, 10, 11, 12, 13,1}58,280 Mean of 8o|58,799

Procyon.

15, 16

1812, June 12, 19, July 25, Sept.

15, 16, 17, 18, 19, 20. 1813,/> 13,999 Mean of 10|13,999

Feb. 24

Mar. 3, 6, 8, 17, 22, 29, Apr. 2, } 14.

}14,221 Mean of 20 14,110

4, 9, 10

Apr. 12, 14, 20, June 2, 7, 8,
July 29, Aug. 11, 14, 16

}14,795 Mean of 30 14,338 Aug. 17, 23, 24, Sept. 2, 6, 7,

}14,426 Mean of 40 14.360 10, 12, 13, 14

Probably exact to a quarter of a second.

a Orionis.

1812, July 17, 22, 25, Aug. 5,

13, 14, 16, 17, 19. 1813, 16,044 Mean of 10 16,044 Jan. 2

Jan. 10, 11, 13, 16, 22, 25, 27,115,486 Mean of 20 15,765

28, Mar. 2, 11 Mar. 18, 22, Apr. 3, 4, 9, 10,}16,380 Mean of 30 15,970

11, 12, 13, 14

Apr. 17, 18, 19, 20, May 29,
July 8, 16, 17, 28, 29

} 15,849 Mean of 40 15,940 Aug. 6, 8, 11, 13, 18, 19, 20,314,856 Mean of 50 115,723

23, 24, Sept. 1

From the discordance of the last series, I consider this result as doubtful.

a Serpentis. 1812, June 12, 13, 17, 19, 22,}38,187 Mean of 10 38,187

23, 28, 30, July 2, 4 July 6, 8, 9, 15, 18, 20, 21, 22, } 39,508 Mean of 20 38,847 Aug. 14, 15, 17, 18, 19, Sept.

39,700 Mean of 30 39,132 15, 16, 18, 21, Oct. 3 Oct. 4, 13, 26, Dec. 6, 7, 12.

} 1813, Jan. 8, 9, 15, June 7

39,282 Mean of 40 39,169 June 8, 10, 13, 16, 18, 21, 22,

}39,244 Mean of 50 39,184

26, 28

24, 25, 27

July 5, 10, 11, 12, 16, 17, 18, 19,

20, 22

}39,670 Mean of 60 39,265

July 23, 26, 27, 28, 29, 30,

$39,240 Mean of 70 39,260 Aug. 2, 7, 12, 15

Result very exact.

Rr

MDCCCXIII.

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The mean of more than 200 observations of this star is 1° 41' 21",75. The above 167 were selected in preference; the result, however, is the same.

· Notwithstanding the great number of observations of this star, there are discordances which render the result doubtful to 0",25. If the observations with four microscopes, previous to Oct. 1812, be rejected, the mean result with six microscopes will be 1° 41' 21",6, which I prefer to the above.

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