Those readers of Polar Record who are familiar with the narratives of Scott, Shackleton and Mawson during the ‘heroic age’ of Antarctic exploration, will have come across a sledging food called ‘plasmon’. Here, therefore, for their amusement is an outside page of an advertisement for that product, probably of the 1890's or early 1900's (Fig. 1). It measures 12 × 9 inches. Only the front and back pages form the advertisement which indicates on the back page that plasmon is available from all groceries and that a teaspoon a day ‘will prove a great aid to health and strength’. The centre pages carry the words and music of a song entitled ‘Humpty and Dumpty’ said to have been sung by Miss Ellaline Terriss (1871–1971), the well known, and long lived, actress and singer.