[ 417 3 
V. Remarks upon the Solar and the Lunar 
Tears , the Cycle of 19 Tears, commonly 
called the Golden Number, the Epadt, and 
a Method of finding the Time of Eafter, as 
it is now objerved in moft Parts of Europe. 
Being Part of a Letter from the Right 
Honourable George Earl of Macclesfield 
to Martin Foikes, Ejq\ Prefident of the 
Royal Society. 
Of the Solar Year. 
Rtad May 1 0. r i ^ H E mean Tropical Solar Tear y or 
I that mean Space of Time wherein 
the Sun, or Earth, after departing from any Point 
of the Ecliptic, returns to the fame again, confifts, 
according to Dr. Halley ' s Tables, of 36yd, yb, 48', 
yy" : Which is lefs by 1 i', 5", than the mean Julian 
Year, conlifting of 365**, 6‘, o', 0". 
Hence the Equinoxes and Solftices anticipate, or 
come earlier than the Julian Account fuppofes them 
to do by 11', y", in each mean Yearj or 44', 
20" in every four 5 or 3 d , ih, y^', 20", in every four 
hundred Julian Years. 
In order to correft this Error in the Julian Year, 
the Authors of the Gregorian Method of regulating 
the Year, when they reformed the Calendar in the 
Beginning of October 1582, direded that three in- 
tercalary Days fhould be omitted or dropped in every 
four hundred Years 5 by reckoning all thofe Years, 
whofe 
