22 BROWN : 



1582 being C, N. S. Friday has letter A. And the same will 

 be the case with 1492. Accordingly we find A under 22nd 

 October, as is right and proper. 



Take one more instance. 



George Washington was bom in 1732, February i ith-22nd. 

 The O. S. Sunday Letter of 1732 was A, and as the letter of 

 Febniary ist is always D, we have : 



D E F G A B C 



G, Saturday, February nth. 



The N. S. Sunday Letter of 1732 was E, and D, Saturday, 

 was February 22nd. 



The letter shifts eleven places, or four, which is the same. 



Now from 1582 to 1732 is 150 years. Add to this one- 

 quarter, or 37, and get 187, or 26 c^^cles of seven and five 

 over. This would shift the letter five places. But 1700 is not a 

 leap year, and shifts the letter but one place. Therefore, 26 cycles 

 of seven and four over, which justifies the other computation. 



The subject is not exhausted by any means, but enough 

 has been presented to put any one that feels so disposed in the 

 way of going farther. 



The whole matter may now be summed up. 



The letter backs one for every common j'ear and two for 

 every leap year. 



Leap year is ever)' fourth year beginning with the year 

 One. And the letter of the year One was B. 



So that dividing any date by four and adding the whole 

 part of the quotient to the date gives the number of times the 

 letter has backed one place from C. This with exceptions by 

 special enactment. 



Take the year 1904. 



1904 -h 476 ^^ 2380. Throw out the sevens, and find that 

 2380 is measured by seven. We back nothing from C. 



But the rule gives the Sunday Letter of 1904 as B, six 

 places farther on. 



There is something yet to be taken into account. 



