KASTKR SUNDAY AND THK DOMINICAI, LKTTKK. 1 7 



4. Set down the years and a quarter of the same, neglecting 

 fractions. 



Because this gives the number of years in each of 

 which we back one. There are, namely, as many leap 

 years as there are whole fours in the number of j^ears. 



5. Add up. 



Because all the above is backward movement, and the 

 above is all the backward movement from G which 

 the years of the given date occasion. 



6. Divide by seven. 



To throw out the sevens which do not affect the result. 



7. Subtract the remainder from seven. 



Because the remainder is the number of places back- 

 ward from G, and the difference between the same and 

 seven is the number of places forward from G. 



The English did not move into line until 1752, and we 

 might inquire what would become of our rule had the 'Grego- 

 rian system dated from that year instead of 1582. 



The delayed calendar reformation allowed another centurial 

 year, the year 1700, to go through as a leap year, thus anticipa- 

 ting by one day the record (not the fact) of the vernal equinox. 

 Eleven days were to be dropped instead of ten. So to square 

 the record with the fact Thursday, September 3rd, with letter 

 A, was called Thursday, September 14th, with letter E, thus 

 advancing through eleven letters, or four, which is the same 

 in result, and modifying the rule in form but not in principle. 



Three places which we advance for C in the year "o," 

 together with the four places due to the calendar reformation , 

 make seven places, which leave us at G, where we were. The 

 Dominical Cycles are thrown out, and the remainder centuries 

 give each five back or two forward. We choose the former 

 way because it is more convenient, multiply our remainder 

 centuries by five and set down the product. The odd years 

 are dealt with precisely as before and for the same reasons. 

 They give a certain number of places backward, and these are 

 added to those caused by the centuries. We throw out the 



