Letter from Elie François Wartman, Geneva to [Edward Sabine] Wartmann expresses regret at not being able to travel to Hull to attend the meetings of the British Association. Wartmann informs Sabine of his father’s illness, and losing communication with his friends, staying in the Alps for spiritual peace. Description of Wartmann’s practical research. Reference to fireworks, ammunition, gunpowder, gunnery boxes of the army, protection against the action of incendiary bullets, warships, and explosions. Wartmann received the volume of observations from Toronto. 12 October 1853