This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
60 | seconds...... | 1 | minute, |
60 | minutes................ | 1 | degree. |
30 | degrees................ | 1 | sign. |
90 | degrees................ | 1 | quadrant. |
4 | quadrants.............. | 1 circle. | |
360 | degrees............... |
A convenient method of finding the difference in time between two places, is to notice their distance apart in degrees of longitude, and allow 4 minutes to each degree, based on the following
CALCULATION:
1440 | minutes............ | 1 day. |
or revolution of the earth. | ||
1 | revolution of the earth is | |
360 | degrees; therefore, | |
1 | degree.........4 minutes. |
 
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