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‘“« The next Table, No. II., contains the mean hourly mo- 
tion and azimuth, calculated from the theory of M. Foucault. 
~'Tasxe II. 
M. Foucault. 
Hour. 
Hourly Motion. Azimuth. 
‘¢ A comparison of Tables I. and II. shows that M. Fou- 
cault’s azimuth appeared to fall short of observation during the 
first, second, and third hours ; that it agreed with observation 
_ during the fourth and fifth hours ; afterwards exceeded the ob- 
servations, until, at a period occurring during the twelfth 
hour, it again coincided with the observed azimuth; became 
deficient again during the thirteenth, fourteenth, and fifteenth 
_ hours; and coincided with observation in the early portion of 
the sixteenth hour. 
“TfM. Foucault’s azimuths be compared with the observed 
azimuths at the end of every three hours, the agreement will 
appear more close. 
