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SAUROPOD GASBAGS



Nick Pharis: Actually, warmer hydrogen is better lift than
cold hydrogen, but only slightly. You see, these sauropod gasbags
were VERY delicately balanced, within 1% of neutral bouyancy
at any given time.

Now, Professor Theobald Phlogiston has another theory, that the
sauropodus gasbaggus in fact digested overnight, producing more
and more hydrogen until, about dawn, they start to rise (literally
and figuratively). As the day goes by, yesterday's dinner
continues to digest (producing lift) while today's dinner is on-loaded
(producing weight), keeping the blimposaurus in equilibrium. If he
gets too light, a little gas is vented. If he gets too heavy, he just
stops eating for a few minutes until gas production restores
balance.
Eventually, all of yesterday's dinner is digested and the late
afternoon snack loads the beast down just enough to settle nicely
into the pre-selected resting spot. Experts are divided as to whether
the sauropods sometimes slept in rivers or lakes for safety from
predators.