[1] He studied at Basel and at Neuchâtel, and when thirteen years of age took the degree of doctor in philosophy.
[1] Some years after, he visited Germany, France and England, and subsequently Italy, Courland, Russia and Poland.
His writings consist of travels and astronomical, geographical and mathematical works.
In 1774 he published a French translation of Leonhard Euler’s Elements of Algebra.
[1] The bulk of the correspondence was sold to the Swedish Academy where it was overlooked until rediscovered by Hugo Gyldén at the Stockholm Observatory in 1877.