Fibonacci spiral formed by drawing a quarter circle in boxes whose lengths decrease by a factor of 0.168 – the golden ratio.
Pearly or chambered nautilus (Nautilus pompilius).
Sir Hans Sloane (1660–1753).
Type specimen of cocoa (Theobroma cacao) collected in Jamaica by Hans Sloane.
Montagu House, Bloomsbury, the first home of the British Museum.
Early Natural History Museum gallery.