My aunt, who set no store by these dusty papers, would willingly have given the whole to me, but I contented myself with two or three books, with notes written by the Minister Bernard, my grandfather, and among the rest, the posthumous works of Rohault in quarto, the margins of which were full of excellent commentaries, which gave me an inclination to the mathematics.

This book remained among those of Madam de Warrens, and I have since lamented that I did not preserve it.

To these I added five or six memorials in manuscript, and a printed one, composed by the famous Micheli Ducret, a man of considerable talents, being both learned and enlightened, but too much, perhaps, inclined to sedition, for which he was cruelly treated by the magistrates of Geneva, and lately died in the fortress of Arberg, where he had been confined many years, for being, as it was said, concerned in the conspiracy of Berne.
This memorial was a judicious critique on the extensive but ridiculous plan of fortification, which had been adopted at Geneva, though censured by every person of judgment in the art, who was unacquainted with the secret motives of the council, in the execution of this magnificent enterprise.

Monsieur de Micheli, who had been excluded from the committee of fortification for having condemned this plan, thought that, as a citizen, and a member of the two hundred, he might give his advice, at large, and therefore, did so in this memorial, which he was imprudent enough to have printed, though he never published it, having only those copies struck off which were meant for the two hundred, and which were all intercepted at the post-house by order of the Senate.
[The grand council of Geneva in December, 1728, pronounced this paper highly disrespectful to the councils, and injurious to the committee of fortification.] I found this memorial among my uncle's papers, with the answer he had been ordered to make to it, and took both.

This was soon after I had left my place at the survey, and I yet remained on good terms with the Counsellor de Coccelli, who had the management of it.