6 14 TRANS. ST, LOUIS ACAD. SCIENCE. 



Comparison of Chronometer. — Hoivard Clock. CIn-onomder. 



h. m. s. 

 (i) Automatic 90th merid. hour-signal at 3 p.m.. May 9, = 2 5S 41.0 



(2) Howard Clock (at Observy of Wash. Univ.) S 26 00.0 = S 24 41-3 



(3) '• " •• '• •' 22 24 00.0 =22 22 40.8 



Clock is fast 05.6 and automatic apparatus closes at 595.0, so there 

 is a correction for (i) of — 15.6, and for (2) and (3) of — os.6, to 

 reduce Howard Clock to standard central time. Or : — 



//. in. s. h. III. s. III. s. 



(i) 2 59 58.4 = 2 58 41.0 Chronometer slow = i 17.4 



(2) 8 25 59.4 = 8 24 41.3 " '• = I iS.i 



(3) 22 23 59.4 = 22 22 40.8 " •• = I 1S.6 



Hence, rate of chronometer is approximately 05.1, losing per hour 

 and the correction for ist contact m. s. 



2d 



= + I 17.8 



= -f I 17-9 

 O. B. Wheeler, U. S. Ass't Eng'r, Observer. 

 G. A. Marr, >• " " Recorder. 



