1811.] Notes on Capt, Shor trade's Scheme. 609 



Guardian, Wednesday, 25, 1713 



Friday, July 13, 1713 



Spectator, Monday, October 20, 1712 



Wiiere the two years are given, the ecclesiastical and the historical, 

 the scheme agrees with the second or historical. 



The inference is that the scheme, as matter of fact^ is unservicable 

 for dates in New Style earlier than the 14th September 1752 ; and si- 

 milarly for Old Style as far in the " dark backward and abysm of 

 time" as the first fault occurs ; the year of confusion for instance. 



38. In the author's directions for dates before the Christian aera, it 

 would, perhaps, be better to substitute the word year for date in the 

 words '* subtract the given date,'' 



39. After the foregoing observations, the reason of the prescribed 

 manipulation of the scheme will be understood. 



By adjusting the century division to the division 0, the days 

 commencing the current years fall under the right divisions by Articles 

 22; 23; 13; 14. 



The day on which a year begins is the day on which these dates of 

 January fall ;— 1 (of course) and 8, 15, 22, 29 by Obs. 8 of Art. 2. 



The day on which these dates fall is the day on which certain dates 

 of other months fall ; vide Observations 8. of Art 2 ; and which are 

 arranged on the smallest card of the scheme. 



Therefore by bringing a month to the division of a current year, 

 the week-day above shews on what day the subjacent dates of that 

 month fall (with slight variation for leap years.) 



The other dates of that month lie under their proper week-days 

 by Art. 1. 



There are no directions given how the scheme is to be used for 

 years of the first century; viz. the years 1, 25, 60, 99, and the like, 

 which have no hundred before them. It is therefore necessary to 

 insert a cypher or zero among the hundreds of 7, 14, 21 of Old Style, 

 thusO, 7, 14, 21, 28, 35. 



40. In the cou.rse of this investigation, my attention fell upon the 

 Tables that relate to the Dominical Letters. The numbers are the same 

 both in the Tables and in the scheme. It may therefore be anticipated, 

 ' that the scheme will soon supplant the Tables. 



