In addition to other medical works he published anonymously Conjectures sur les memoires originaux dont it parait que Moyse s'est servi pour composer le livre de la Genese, (1753), in which he pointed out that two main sources can be traced in the book of Genesis; and two dissertations on the immateriality and immortality of the soul,.
Although relegated to a note (vii.), and propounded "Avec la defiance que doit inspirer tout ce qui n'est point un resultat de l'observation ou du calcul," it is plain, from the complacency with which he recurred to it 3 at a later date, that he regarded the speculation with considerable interest.
The form in which certain of the references to him are couched favours the above view; the compiler of Guiron le Cortois says in his prologue that "maistre Gautier Map qui fu clers au roi Henrydevisa cil l'estoire de monseigneur Lancelot du Lac, que d'autre chose ne parla it mie gramment en son livre"; and in another place he refers to Map, "qui fit lou pro pre livre de monsoingnour Lancelot dou Lac."
The plenipotentiaries of Great Britain, France, Austria, Russia, Sardinia and Turkey recorded in a protocol, at the instance of Lord Clarendon, their joint wish that "states between which any misunderstanding might arise should, before appealing to arms, have recourse so far as circumstances might allow (en tant que les circonstances l'admettraient) to the good offices of a friendly power."
Calvin replied (r3th February 1546) in a letter now lost; in which, he says, he expressed himself " plus durement que ma coustume ne porte."