i '2 12 ] ) 
in. Jn Explanation of the ^le for the findpig of 
Eaften In a Letter from the ^yerend Mr J. Jack- 
man to Dr Hans Sloane^ S. S. 
HAving met with feveral Explanations of the Rule for 
Eajier in our Common-Prajer-Book^ and two pub!i(h*d 
among the Tranfa&ions of the Royd Society^ but none right 
and fufBcient s and leaving undoubtedly collefted the true 
fenfe of the fame, by comparing the faid Rule and the Ta- 
ble for Eaflcr in the Commn Prajcr-Book, together, I have 
been perlwaded to communicate it to you, in order to be 
inferted (if you think fit) in thQ UQxt Pkilofopkical TraKf- 
affiovs, as here follows. 
The Rule is thus worded, viz. 
Eafter-day ^ alvpajs th$ firji Sunday after the Jirfi full 
Moon^ which happens next after the one and twentieth 
day of March. And if tht fnll Moon bapp§ni upon m 
Sunday, Eafter-day k the Sunday after. 
For the right underftanding of which it is 
fufficient to obferve, 
1. That the full Moon meant is the 14th day of the 
Moon, according to the Kalendar in the Commoft^ 
Prayer-Book ( which may be calFd the Church-Kalcn- 
dar) counting that day of the Month for thefirft of the 
Moon, which hath the Golden Number of the Year 
collateral to it in the firft column of the faid Kalendar. 
And 
2. That thefe words [ next after Mar. 21. 1 are meant 
inclufively, as if it had been faid [next after the com- 
mencement of Mar. 21.1^ fo that if the full Moon 
happens on Mar, ^i. the fame aauft be the Pafchal 
full Moon, Now 
