From this date the year is expressed by the last two figures only.—thus, 18 for 1818, etc.,—up to the present time.
Footnote:
[1] This comet was sometimes substituted for the ordinary mark of the letter Q.
From this date the year is expressed by the last two figures only.—thus, 18 for 1818, etc.,—up to the present time.
Footnote:
[1] This comet was sometimes substituted for the ordinary mark of the letter Q.