OF A PENDULUM AT GREENWICH AND LONDON. 



99 



In addition to the preceding-, two observations only of the Sun are available, 

 which occurring at a time when only one star could be taken, are better em- 

 ployed in conjunction with that star; thereby more nearly equalizing the 

 share of credit to be attributed to the several results. 



Giving this result the same weight as that of j3 Tauri on the 22nd, where it is 

 probable the greatest error exists, we have for the daily rate of the transit 

 clock as follows. 



July 21 to 22. —0.45 



23. —0.57 



24. —0.56 



25. —0.56 



26. —0.55 



m s 



or +3 55.46 on mean time. 



+3 55.34 



-j-3 55.35 



+3 55.35 



+3 55.36 



Making use of these rates with the following comparisons, the daily rates 

 of the coincidence clock can be obtained up to the 26th ; and since no obser- 

 vations offer to determine the rate on the 27th, the rate as determined up to 

 within twelve hours of the comparison on the 27th (— 0".55) may with safety 

 be used. 



Thomas Glanville Tayix)r. 



, 0I.8{ r 



02 



