116 Mr. Herschel's account of a series of observations 



2. Fairlight Chronometer, at Station C. Baker, No. 744. 

 19th. Z,— C,= 7''49™2'-75 Z,= iS** is'^sC's^ 

 Z — C = 7 45 4 -31 Z = 17 53 32 -44 



+ 3 58*44 +0 18 47*88 



n 3°* 58-44 _ Qin £.^s.Q«_i_o .h 



P 24hi8'«47«-88 3 55 36-r-24 



and rate on mean time = + 0^-55. 



Rates of the Chronometers from the 19th to the 21st. 

 For Motel, No. 39- 

 A, — B^ = 7"^ 58"^ S»-69 A,= 18M4"15'*18 



A — B = 7 50 7 *90 A = 18 19 41 -83 



+ 7 55"79 -^ 5 ^6 65 



being a rate of — 2'-52 on mean time. 



For Baker, No. 744. 

 Z,— C,= 7''56'"48^-40 Z,=z i7^38"56^'io 



Z — C = 7 49 2 -75 Z = 18 12 20 -32 



+ 7 45 '65 — o 33 24 '22 



)3 = 7- 45-65 ^__3m5 ..^g _^2 h 



Being a rate of + o^*35 on mean time. 



Rates of the Chronometers from the 21st to the S2d. 

 Motel, No. 39' 

 A, — B,= 8^ 2"^ o«-l4 A^= l8Ml'"24''77 



A — B=7 58 3-^9 A = l8l4l5'l8 



+ o 3 56*45 — 02 50-41 



^ _ 3- 56-45 = — s^n 56^.92 -^ 24^ 



^ 24*^ — 2m5os*4i 



being a rate of — i^*oi on mean time 



