<p>Sketches made by Martens during his passage from England to South America, mainly prior to his joining of the Beagle crew in November 1833. The first sketch made while Martens' was a member of the Beagle crew is <a href='' onclick='store.loadPage(27);return false;'>Add 7983: 21v-22</a>, just before their departure from Montevideo. On the original <a href='' onclick='store.loadPage(1);return false;'>Add 7983: cover</a>, the roman number III appears. On the bottom, at the lower end, it is inscribed: 'South America'. Of the sixty-two pages, twenty are illustrated in pencil, a double page in sepia, and the remaining twelve illustrated pages are watercolours. Most of the sketches are dated, and the book remained in use until early February 1834.</p>