(Some of this pain is due to electricity.)
Q. Why do cellars feel warm in winter?
A. As the external air has not free access into cellars, they remain at a pretty even temperature, which (in winter time) is about 10 degrees warmer than the external air.
Q. Why do cellars feel cold in summer time?
A. As the external air has not free access into cellars, they remain at a pretty even temperature, which (in summer time) is about 10 degrees colder than the external air.
Q. Why does lightning strike the oak-tree more frequently than any other tree?
A. 1st—Because the grain of the oak, being closer than that of any other tree, renders it a better conductor: and
2ndly—The sap of the oak contains a large quantity of iron in solution, which is a most admirable conductor of lightning.
Q. Why does air rust iron?