true solution; but unfortunately, things are not always what they seem, especially not in our hero's case, and William's explanation, plausible though it was, was incorrect. This he soon discovered; for although he turned himself head downward for a short time, he found that this position did not relieve him in the least.
The real explanation of the matter was probably that William's internal organs were under the same conditions in his body as he himself was in the car; in other words, they tended to remain stationary at whatever point they might be. Hence whether he stood upright or head downward made no difference; even his blood would have no tendency to run more in one direction than in another. No matter how he placed himself, the flow of blood to his head would be somewhat more than normal, because gravitation no longer pulled it down into his feet as it did on the earth. In a word, his head received as much blood now as it would ordinarily upon the earth if he were lying perfectly flat.
William's surprise at not feeling in any way the increase in his velocity would have disappeared had he remembered that the earth, in its course
