444)

Author: Isaac Newton

Source: MINT 19/3/442, National Archives, Kew, Richmond, Surrey, UK

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- Revision History
  - 1 January 2001
    - Catalogue information compiled by Rob Iliffe, Peter Spargo & John Young
  - 29 September 2011
    - Catalogue exported to teiHeader by Michael Hawkins
  - 21 March 2017
    - Transcribed by Will Scott
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Related Texts
- This document is a version of:
  Formula for calculating customs duty, followed by notes on the measurements of Herod's temple and a series of trigonometrical calculations [MINT 19/3/444]

<442r>

Because Merchants pretend that they are not to be taxed for the Duty they pay to the king but only the {illeg}|e|xcess of the {illeg}|v|alue abo of their goods above the Duty: the for doing this the following probleme is proposed

Problem.

To lay a tax\Duty/ at any \assigned/ rate upon the excess of the value of any parcel of goods above the Duty.

Sol{illeg}|u|tion.

By the Rule of fals Position, assume any {e}|E|xcess at pleas{illeg}|ur|e, & the rate will give the Duty upon it, & the Duty added to the Excess will compose the va{illeg}|lu|e of the goods \in this case. {sic}/. Then any o And by the golden Rule, As this value is to the Duty, so is the Value of any other parcel of goods to the Duty upon it.|the|m.

Example 1

If the Excess be assumed be 100^li & the rate 9 p^r cent, the Duty will be 9^li, & the value of the goods 109^li. a|A|nd as \the value/ 109 |is| to \the Duty/ 9 so will the value in any other case be to the Duty upon it And by the golden Rule: {illeg}|A|s 109 to 9, so is the value of any parcel of Goods to the Duty upon them

Example 2

If the Excess assumed be 100^li & the rate be 20 per cent the Duty will be 20^li & the value of the goods 1{1}|2|0^li. And by the golde{illeg}|n| Rule; As 120 to 20, so is the value of any parcel of goods to the Duty upon them.

Any other way of recconing makes\is illegal/ voyd the Act of Parliam^t.

NB. \Here/ By the value of the goods, is to be understood tha|e|t \clear/ value w^ch remains after the charges of warehouse room & all other charges except the Duty are subducted.