Here's what came up when I searched the CD-ROM on "snakes" and "legs":
***g90 12/8 p. 28 Watching the World ***
NOTA LEG TO STAND ON
Evolutionists assume that snakes evolved from lizards, but they are hard put to explain why lizards lost their legs. In 1973 an influential Harvard University study asserted that snakes evolved from lizards to conserve energy by slithering instead of walking. Recently, however, scientists at the University of California, Irvine, put that theory to the test. They outfitted some black racer snakes with tiny oxygen masks, put them on treadmills, and measured how much energy they actually do expend in slithering. The results: The snakes either used the same amount of energy as, or up to seven times more than, legged lizards walking the same distance.