[343] 
IL An ExtraU of two Letters^ from Dr. John 
Wallis 5 ( Profe^or of Geometry in Oxford. ) 
The One to his Grace the Lord Arch-Bi/hop of 
Canterbury. The Other to the Lord Bijhop of 
Worcefter. 
Goncerning the Alteration ( fuggefted ) of the Julian 
account for the Gregorian. 
FOR 
The mofi EeVerend Father in God ^ Thomas 
Lord Jrch-Bijhop of Canterbury, his 
Grace at Lambeth. 
Oxford June 13. 1699. 
May it pleafe yom Grace y 
AS to what your Grace mentions (intheclofe of 
your Letter which I had the honour to receive ) 
about altering the Annual Stile. I am at a lofs 
what to fay. That there is , in our Ecc/efiajlical Com- 
putation of the Pafchal Tables , fomewhat of Diforder, 
is not tobedeny'd. But I am very doubtful , that, if 
we go to alter that , it will be attended with greater 
Mifchief, than the prefent Inconvenience. It is dan- 
gerous removing the Old Land-marks. Kclkov yMfJucvov 
i mvYiTiov. A thing (of moment^ when once fettled 
Fff (though 
