Filling a balloon with hydrogen gas Size:XS: 30 x 20cm the first recorded execution at

the first recorded execution at the Tower

on Tuesday 20th July

A mackerel seller holding a fish

The scene is described below the image in English and French

Filling a balloon with hydrogen gas Size:XS: 30 x 20cm the first recorded execution atScene showing the inflation of a balloon by hydrogen gas piped from a barrel. The gas was produced by the reaction of sulphuric acid and iron. A preliminary balloon of this type was flown at the Champ de Mars in Paris, France on the 27 August 1783 an event witnessed by Benjamin Franklin. Plate 3 from the book Description des expriences de la machine arostatiques de MM. de Montgolfier, by Faujas de Saint Fond (Paris, 1783). Inscribed below : 'Bertault