Images Dated 13th August 2009

Coloured X-ray of the Nautilus shell

Nautilus shell. Coloured X-ray of the cephalopod shell, Nautilus pompilius. This is the common chambered or pearly Nautilus. The shell is empty of contents, with inner chambers and spiral whorls visible. The external colour of the shell is off- white, with radial bands of a tan colour. The siphuncle tube is clearly seen here, passing from one shell chamber to another; this internal tube fills the chambers with gas and enables the Nautilus to float or sink. There are only 6 living species of Nautilus, descended from a large group which originated in the early Palaeozoic era. The animal resembles a squid in having a foot of many tentacles. It feeds on crabs and carrion

© D.ROBERTS/SCIENCE PHOTO LIBRARY

Swainsons Spurfowl (Francolinus swainsonii)

A Swainson's Spurfowl calls out whilst perched on a tree branch in the early morning light. Kruger National Park, South Africa

© Ben Cranke

92992851, Behaviour, Communication, Singing, Vocal, Warning

Crushing Sugar Cane

Plantation workers crushing sugar cane, circa 1822. In the background, workers are boiling down the juice. Original publication: First Appendix to Report on East India Sugar, 1822. (Photo by Hulton Archive/Getty Images)

© 2009 Getty Images

105242, Only, 105243, 16603, Men, H Sug Cane Proc, Sitting, Agricultural, 2521, 5 4, 89769112, Black, Box, Cane, Sugar, Background, Machinery, Men, Sugar, Orig, People, J156905201, Diry, White, Farm, Worker, H