“ After his death restorations of Apollonius's treatise De sectione determinata and of Euclid's treatise De porismatibus were printed for private circulation in 1776 at the expense of Earl Stanhope, in a volume with the title Roberti Simson opera quaedam reliqua. ”

“ The first three books of this treatise were translated into English, and several times printed as The Elements of the Conic Sections. In 1749 was published Apollonii Pergaei locorum planorum libri II., a restoration of Apollonius's lost treatise, founded on the lemmas given in the seventh book of Pappus's Mathematical Collection. ”