Letter from Samuel Garth concerning the text of a medal

<text in Samuel Garth’s hand begins>To Sir Isaac Newton

Sir

I beg you will not think mee impertinent in troubling you with this. it is upon the account of the Medall

Proceribus populisque concentientibus

I think it will be better thus

Senatu Populoque sancientibus

Proceres is but a Metaphor & is properly the Beams in buildings, and expresses rather cheif Officers than Noblemen

Populos is read in the plurall number but I think ofter in the singular sancire leges in Tully's word

I am your most obedient Serv

S: Garth