Images Dated 13th February 2004

The giant Pan-American Airways flying boat the Flying Clipper, which a few weeks

The giant Pan-American Airways flying boat the Flying Clipper, which a few weeks ago made a series of test flights over the Pacific, has taken off from Alameda, California, on her opening commercial flight to Honolulu. This is the first stop on her 5, 000 miles flight to Ware Islands in the Pacific Ocean.
Photo shows:- The Flying Clippier in flight.
10 August 1935

© 2004 Topham Picturepoint

Section through human abdomen

Illustration of a section through the human abdomen describing the process of continous ambulatory peritoneal dialysis, the infusion of dialysis fluid from a plastic bag directly into the peritoneal cavity via a plastic catheter. The purpose of both peritoneal dialysis and haemodialysis (performed on a kidney machine) are to remove waste products from body fluids of a person whose kidneys function insufficiently. In both cases the principles of dialysis are identical (see detail at top right): waste solutes in blood diffuse across a semipermeable membrane (in this case the peritoneal membrane) towards the lower solute concentrations of the dialysis fluid

© DAVID GIFFORD/SCIENCE PHOTO LIBRARY