Holograph notes concerning the selling of tin

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Paid annually for 1600 Tuns of Tin at 3li. 10s pr C stan. wt		112000
Coinage Duty 6400li. Post Groats about 300li		6700
Freignt to London about		2000
Salaries (including 30li paid to ye corporation of Truro)		2890
Incidents, Salaries, {sic} Letters, striking of Tallys & passing accts		1050
Losses by enemy sea & accidents & abatemts for encouragement of exportation	}	4000
Total expence		128640

{illeg}Which is 4li 0s 5d per C stan. weight, besides the interest of about 200000li wch is equipollent to 7s 6d per C.

Whereas 3li 16s per C avoirdepois, is but 4li 1s 5d per C stan.

So her Maty loses 6s 6d per C stan. wt. wch in seven years amounts to 72000, besides the loss by the fall of the price in the end of the contract

If the Coinage Duty & Post Groats had not been remitted, & her Maty had paid only 3li 8s 6d per C stan. wt, the contract would {illeg}have been nearly equal, except the loss by the fall of the price in the end of it.

This loss, if {illeg}the contract should cease at Christmas come twelve month might amount to 50 or 60 thousand pountsds & so is equipollent to about 5s pr C stan. wt in the price.

For every hundred Tunns added to the annual quantitypurchase of Tin, about 12s 4d per C wt ought to be abated in the price if the war continue.

And one hundred Tunns added to ye annual quantity purchased, is equipollednt to 2s added to ye price