True False 400 300 True False vertical True False 5 3 5 5 <b>In the space</b> of one hundred and seventy-six years the Mississippi has shortened itself two hundred and forty-two miles. <b>Therefore</b> ... in the Old Silurian Period the Mississippi River was upward of one million three hundred thousand miles long ... <b>Seven hundred and forty-two years</b> from now the Mississippi will be only a mile and three-quarters long. ... <b>There is something fascinating about science.</b> One gets such wholesome returns of conjecture out of such a trifling investment of fact. -- <b><i>Mark Twain</i></b> True True True True 0 True False 2 2 3 2 True spread gtk-close True True True half True True False False 0 True gtk-justify-left left True True True True True False False 1 gtk-justify-center center True True True True True False False 2 True gtk-justify-right right True True True True True False False 3 True False False end 1