the ancient, rough estimate of sixty miles to a degree; calling the mile a geographical mile. Therefore, the geographical mile is longer than the English mile. D, in feet, = (7925)(5280) ; g = 16.076. By the applica-tion of logarithms, we find this expression to be 5069 seconds,or 1 h. 24 m. 29 s.;… … CONVERGENCY OF MERIDIANS. 61 As all meridians come together at the pule, it follows that Chap, t,a degree, between the meridians, will become less and less aswe approach the pole; and it is an interesting problem totrace the law of decrease.* * This law of decrease will become apparent, by…
Astronomy
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