Note by John Cartlitch on the remedy for guineas and Irish halfpence

If a ℔ Troy of Gold be cut into $44 \frac{1}{2}$ guineas, then the weight of each guinea will be $129 \frac{39}{89}$ grains, or $129 \frac{438}{1000}$ .

If 20 grains remedy be allowed ꝑper ℔, aguinea may weigh from

129 \frac{79}{89}

grains or

129 \frac{8876}{10000}

for the heaviest, to

128 \frac{88}{89}

for the Lightest.

44 \frac{1}{2}

guineas each weighing 130 grains, will weigh exactly 25 grains above a pound Troy: And

44 \frac{1}{2}

guineas each weighing 129 grains will be

19 \frac{1}{2}

grains lighter than a ℔ Troy. So that a guinea should alway weigh betwixt 129 and 130 grains. If a ℔ Troy of Gold be cut into

44 \frac{1}{2}

guineas, and each gain be valued at £1:1. then

\begin{array}{l} \begin{matrix} 1 oz. \\ 1 . d^{wt} \\ 1 gr. \end{matrix}} & of Gold is worth & {\begin{matrix} \overset{£}{3} : 17 : 10 \frac{1}{2} \\ 0 : 3 : 10 \frac{29}{40} \\ 0 : 0 : 1 \frac{101}{105} \end{matrix} \end{array}

Hence in practise, ℔ odd grains may be always valued at 2d; the error in adwt amounting only to

1^{d} \frac{1}{4}

. but in an oz. it will be

2' : 1^{d} \frac{1}{2}

. According to the Warrant for Coining Copper for Ireland, an Irish halpenny should weigh

4 \frac{12}{13}

drams; and the remedy ꝑper ℔ Averdupois (being

130

) is

1 \frac{11}{15}

half-penny. Average of the lightness ꝑper ℔ upon ℔ whole Coinage in 1736 is

9 \frac{9558}{10000}

grains; And this fraction is a profit to the bank of 14 oz. 1dwt & 18 grains of Gold = £54: 18: 4 a Paper by Mr Cartlitch concerning the standard Mint Paper In Conduitts Hand