Genre:

Letter, Spoof

Subjects:

Military Technology, Steamships

    The author explains that his son, who is a millwright, 'takes his stand on these Turretts' used in ironclads. Surmises that when the turrets are struck by enemy shells they will spin around like a 'patent iron chimney pot'. Asks Mr Punch to respond to this and concludes by wondering how Britannia can rule the waves if her turrets are revolving.