There is a complete (though unsigned) letter from Susanna Burney to James on the second page. See the note in the published correspondence, cited below, for additional information.
M.d'A gives the date of writing as "18. Xbre 1794" ("Xbre" being an abbrevation for the French "decembre") and the place of writing as "Bookham."
Address panel with postmarks: "Capt. Burney / James Street No. 26 / Westminster."
[M.d'A]: Writing of the birth of his son Alex: "In a very few years, my dear James, Martin will have a walk-fellow cousin, already two hours old. If I had got a Girl, I meant to give her to him as fellow of an other Kind. As my Son is provided with a neig