More small holes had been drilled further back on its dark steel casing and those took in samples of air as the free fall continued.
In a future class, students may bring in samples of music from their soundtracks and present their CDs to the class.
And traces of melamine have now been found in samples of yogurt and other products made with Chinese dairy.
The Water Authority shows pesticide levels as high as 91 micrograms a liter in samples of drinking water.
But this is the first study to track trends in these chemicals in samples of the most harmful particles of sooty pollution, those smaller than 2.5 microns across.
In order to confirm these findings, he arranged for these variants to be detected in samples of thousands of people with and without manic depression.
His band's ensemble playing was excellent, with the keyboardist punching in samples of kora and horns, and meshing with the lead guitarist's frequent solos.
The rats learn to recognise the presence of TB in samples of sputum, mucus that is coughed up from the patient's lower airways, and rewarded when they succeed.
"We even brought in samples of herbs we'd grown in Billerica and cider we'd made from our apple trees," Ms. Fritz said.
The posting disclosed the Department of Defense tests on the cable's strength and said investigators had also found kinks in samples of the cable.
In those samples, Ebola particles were growing to a concentration much greater than had been seen in samples of human blood from previous outbreaks.
