Images Dated 4th August 2003

Buxton, the Mountain Spa, LMS poster, 1924

Poster produced for the London Midland & Scottish Railway to advertise their service to Buxton, showing views over the countryside, town and viaduct. Artwork bys J Lamorna Birch. Printed by Thomas Forman & Sons, Nottingham

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AN AUSTRALIAN ECHIDNA WALKS ACROSS A TRACK IN SYDNEY

An echidna, native to Australia, casts a shadow as it walks over a track in
Sydney's Taronga Zoo August 4, 2003. Scientists say that the echidna, which
has been called a freak of nature, has often been the victim of mistaken
identity with the hedgehog and North American spiny porcupine but is in fact
one of the world's clearest examples of Convergent evolution - the emergence
of chance look-alikes. FOR RELEASE WITH FEATURE
BC-SCIENCE-AUSTRALIA-HEDGEHOGS NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE REUTERS/David Gray
DG/DL - RP4DRIFRLXAA

Bread mould, SEM

Bread mould. Coloured scanning electron micrograph (SEM) of a sporangium of a bread mould (Rhizopus stolonifer). Spores develop in these sac-like bodies, or sporangia (globular structure). The mould spores then circulate freely in the air, which germinate a network of hyphae (threads) if they land on a favourable medium. Their function is to absorb food for growth and for spore production. Rhizopus sp. produces stolons, or aerial hyphae, which on contact with the medium grow rhizoids (rootlets). These anchor the mould and absorb water. Magnification: x700 at 10x8 inch size

© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY