160 



NOTICES OF AUTHORS. 



and work is correct, according to the rates in most 

 of the harbours of Scotland. 



A quantity of rods or shreds of timber, about three inches 

 in diameter, for nailing on the sloping sides of the ves- 

 sel^ material and labour, , , L.20 0 0 



Eighty tons lime-shells = 560 bolls, at Is. '7di 



per boll, prime cost, . . , 44 6 8 



Freight of 560 boils, at Is. . . , 28 0 0 



The slaked lime is supposed to sell at 2-Sds 

 of the cost, thence the whole loss on a year 

 would equal the value of one cargo. 



Carrying three lime cargoes of shells aboard, 



and spreading them, » . . 30 0 0 



We allow here for the greater distance of 

 carriage, and spreading out of the cargo, 

 nearly thrice the sum requisite to remove 

 lime-shells from a vessel into a cart. 

 Removing the slaked lime of three cargoes, 30 0 0 



Cost first year, . L.152 6 8 

 Deduct rods, . , 20 0 0 



Cost, second, and each following year, . L.132 6 8 



The complete efficacy of lime-shells in preventing 

 dry-rot is already proved — the coasting small craft 

 frequently employed in the carriage of lime-shells 

 not being liable to it. All that requires to be as- 

 certained, is the minimum quantity which will effect 

 it ; and if the expense of this quantity will greatly 

 exceed the average loss by dry-rot in our unemployed 



