[ + 20 ] 
or falling earlier, by 24 Hours in that Space of Time, 
than they did before : And therefore now in the Year 
1770, the New Moons happen above four Days and 
a half fooner, than the Times pointed out by the 
Golden Numbers in the Calendar. 
In order therefore to preferve a fort of regular 
Correfpondence betwixt the Solar and the Lunar 
Years, and to make the Golden Numbers, prefixed 
to the Days of the Month, ufeful for determining 
the Times of the New Moons, it would be necefifary 
when once thofe Golden Numbers fhould have been 
prefixed to the proper Days, to make them anticipate 
a Day at the End of every 310.7 Years, as the Moons 
will actually have done ; that is to fet them back one 
Day, by prefixing each of them to the Day preceding 
that, againft which they before flood. 
But as fuch a Rule would neither be fo eafily com- 
prehended or retained in Memory, as if the Altera- 
tion was to be made at the End or at the Beginning 
of complete Centuries of Years ; the Rule would be 
much more fit for Practice, and keep fufficiently near 
to the Truth, if thofe Numbers fhould be fet back nine 
Days in the Space of 2800 Years ; by fetting them 
back one Day, firft at the End of 400 Years, and 
then at the End of every 300 Years for eight times 
fucceffivcly : whereby they would be fet back, in 
the whole, nine Days in 2800 Years. After which 
they muff again be fet one Day back at the End of 
400 Years, and fo on, as in the preceding 2800 Years. 
By which means the Golden Numbers would always 
point out the mean Times of the New Moons, within 
a Day of the Truth. 
It 
