go A STATISTICAL ACCOUNT OF THE 



NORTHERN TABLET. 



THE EASTERN PIER 



was first erected ; in a 



depth of water of 21 to 



24 feet, in a CoJ^er Dam. 



The lower course of. 

 iVIasom-y is bolted on the 



Rock. 

 THE WESTERN PIER, 

 attended with greater dif- 

 ficulties, constant hazard and 



unavoidable expense, avhs 



commenced in the midst of 



an inclement Winter, within 



a Coffer Dani^ of original and 



appro]3riate construction .; 



in which 800.000 Feet of 



Timber were employed. 



The depth of Water from the 



Rock is 41 Feet. 



No Pier oi regular Masonry^ 



in so great a depth of Water, is 



known to exist in any other part 



of the World. 



The Masonry of this Pier, was 



begun on Christmas Day 1802: 



And erected from the Rock to 



low Water Mark, in 41 Days and 



Nights ; after 7 Months had been 



occupied in preparing the Dam, 



and retrieving its Misibrtunes. 



These Piers are in Length 71 Feet 6 Inches, 



and in Thickness 30 feet at the 



bottom ; battering to the top ; where 



they are in Length 60 Feet 10 Inches; and in 



Thickness 19 Feet 4 Inches. 



The Height of the Eastern Pier from 



the Rock is 40 Feet ; aad that of the 



Western Pier is 55 Feet 9 Inches. The first contains 



3635 Perches, and the latter 6178 



Perches oJ Masonrij, 



The Eastern abutment^ 18 Feet thick, and 



its wings, are founded on the Rock. The West^ 



cm abutment^ of equal Thickness, and its Avings, 



are built on a platform supported by Piles. 



Splay of the wings, 60 Feet. 



