LEAP YEAR
Adair's New Encyclopedia · 1923 · p. 14
also known as ‘bi extile,’ the name given to every year which has 366 days. In 46 B.C. the calendar was reformed by Julius Caesar. The solar year was settled at 36514 days, and under the new arrangement the February of every fourth year was to have 29 days instead of 28, the calendar thus taking a leap of one day every fourth year to balance its being six hours too short in each ordinary year. A leap year is divisible by four without a remainder, excepting in the case of concluding years of centuries, when every fourth year only isa leap year, See CALmNDAR
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