80 A STATISTICAL ACCOUNT OF THE 



NORTHERN TABLET. 



THE EASTERN PIER 



was first erected ; in a 



depth of water ol 21 to 



24 feet, in a Coffer Divn. 



The lower course of 

 Masonry is bolted on the 



' Rock. 

 THE WESTERN PIER, 

 attended with greater dit- 

 ficulties, constant hazard and 



unavoidable expense, was 



commenced in the midst of 



an inclement Winter, within 



a Coffer Dam, of original and 



appropriate construction ; 



in which 800.000 Feet of 



Timber were employed. 



I'he depth of Water from the 



Rock is 41 Feet. 



No Pier of 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 Misfortunes. 

 These Piers are in Length 71 Feet 6 Inches, 

 and in Thickness CO 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 of Masonry. 

 The Eastern abutment^ 18 Feet thick, and 

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

 ern abutment^ of equal Thickness, and its wings, 

 ;ire built on a platform supported by Piles. 

 Splay of the v/ings, 60 Feet. 



