26 BROWN : EASTER SUNDAY. 



no notice. In short, the Epact, which is computed by a rather 

 complicated formula, concerns calendar makers only ; and is 

 here mentioned with its slow changes for no other purpose 

 than to set forth the use of the Dominical Letter as an immu- 

 table landmark which allows much margin in the other items 

 of the account and yet yields a correct result. 



The WEEK seems to antedate eveiy other human insti- 

 tution. 



What I have laid before you makes no pretence to origi- 

 nality. It was evolved by the men of old time and set in 

 order by your reader. 



INDIAN IMPLEMENTS, 



Collected on the River Shore at Chester. 1S93 to 1897. 



BY T. CHALKLEY PALMER. 



The Stone implements and clippings presented to the 

 museum with this paper were all collected near high water 

 mark on the shores of the Delaware in the vicinity of the 

 continuations of Pennell, Howell and Broomall streets, in the 

 city of Chester. As is shown in the accompanying rough 

 sketch, this high water mark runs along the edge of a dyke. 

 This dyke,, now in many places obliterated, is probably ver\' 

 old, and may easily be a part of the rather extensive system 

 of banks thrown up by the early European settlers along the 

 river, other examples of which are still extant. Back of the 

 dyke lies a marsh some three hundred feet wide, and back of 

 the marsh is the fast land. This marsh is being filled up 

 rather rapidly, and within a few years it will have disappeared 

 altogether. 



The implements were mostly found along the outer edge of 

 the dyke, but some of them lay in the inter-tidal tract among 



