51.   The tubes are too small to see, even with the most powerful microscope.

52.   The tubes can be separated into glass and lead for reuse, or reconditioned for use in new computers.

53.   Then, heavy glass tubes are hand-blown from the mold.

54.   There is the tube with a diaphragm, a kind of simple accordion.

55.   They positioned her improperly on her bed so that the feeding tube was at a wrong angle and went into her lungs.

56.   Those tubes were extremely sensitive and could hold burned-in images for very long times.

57.   Those tubes are narrow and can quickly get clogged with guck, letting water sit there until it gets rancid and smelly.

58.   When the tube on top is inflated with air, the bottom tube is crimped shut.

59.   When I arrived at the lake, I noticed the tube was low and drove the short distance back to Sunrise store and filled it with air.

60.   Earlier studies showed that nanotubes can conduct electricity and that the tubes are able to slip back and forth within each other will little friction.