I did myself the honour of writing to you the Beginning of last Week, and I sent you by the Courier, M. Faujas’s Book upon the Balloon, which I hope you have receiv’d. I did hope to have given you to day an Account of Mr. Charles’s grand Balloon, which was to have gone up yesterday; but the filling it with inflammable Air having taken more Time than had been calculated, it is deferr’d till to-morrow. I send you herewith a Paper in which you will see what was propos’d by Messrs. Robert who constructed the Machine; and some other Papers relative to the same Subject, the last of which is curious, as containing the Journal of the first Aerial Voyale perform’d by Men. I purpose being present to-morrow at the Experiment, and shall give you an Account of it by the Wednesday’s Post. With sincere and great Esteem, I have the honour to be Sir, Your most obedient humble Servant.