Ashamed not to have written sooner. Has received AQ's meteorology of Belgium. Wishes success with his work on social physics. Enjoyed AQ's Histoire des sciences mathématique et physique chez les belges. Disgusted that the French insist Isaac Newton stole his ideas on the system of gravitation from Blaise Pascal. Hopes to send AQ his 'synopsis of all micrometrical measures' made by William Herschel on double stars. Sends Latin version of Friedrich Schiller's 'Spaziergang.'